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<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">As filed
with the Securities and Exchange Commission on May&nbsp;7, 2010</font></b></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Registration
No.&nbsp;333-&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;&nbsp;</font></b></p>

<p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

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<p style="border:none;margin:0in 0in .0001pt;padding:0in;"><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>

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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">UNITED
STATES SECURITIES</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">AND
EXCHANGE COMMISSION</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">WASHINGTON,
D.C. 20549</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">FORM&nbsp;S-8</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">REGISTRATION STATEMENT</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="3" face="Times New Roman" style="font-size:12.0pt;font-weight:bold;">UNDER THE SECURITIES ACT OF 1933</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="5" face="Times New Roman" style="font-size:18.0pt;font-weight:bold;">ECOLAB
INC.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Exact name of
registrant as specified in its charter)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center">

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Delaware</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">41-0231510</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(State or Other
  Jurisdiction of<br>
  Incorporation or Organization)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(I.R.S. Employer<br>
  Identification No.)</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">370
  Wabasha Street North</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">St.
  Paul, Minnesota</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">55102</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Address of
  Principal Executive Offices)</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Zip Code)</font></p>
  </td>
 </tr>
</table>

</div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">ECOLAB
INC. 2010 STOCK INCENTIVE PLAN</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Full Title of the
Plan)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Lawrence
T. Bell,&nbsp;Esq.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">General
Counsel</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Ecolab
Inc.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">370
Wabasha Street North</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">St.
Paul, Minnesota 55102</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">(651)
293-2981</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Name, address and
telephone number,</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">including area
code, of agent for service)</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Indicate by check mark
whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See the definitions of &#147;large
accelerated filer,&#148; &#147;accelerated filer&#148; and &#147;smaller reporting company&#148; in Rule&nbsp;12b-2
of the Exchange Act. (Check one):</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="23%" valign="top" style="padding:0in 0in 0in 0in;width:23.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Large accelerated
  filer&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">x</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="19%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:19.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Accelerated filer&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="22%" valign="top" style="padding:0in 0in 0in 0in;width:22.66%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Non-accelerated
  filer&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="27%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:27.62%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Smaller reporting
  company&nbsp;</font><font size="2" face="Wingdings" style="font-size:10.0pt;">o</font></p>
  </td>
 </tr>
 <tr>
  <td width="23%" valign="top" style="padding:0in 0in 0in 0in;width:23.38%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="10%" valign="top" style="padding:0in 0in 0in 0in;width:10.86%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="37%" colspan="5" valign="top" style="padding:0in 0in 0in 0in;width:37.78%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(Do not check if
  a smaller reporting company)</font></p>
  </td>
  <td width="25%" valign="top" style="padding:0in 0in 0in 0in;width:25.56%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="175" style="border:none;"></td>
  <td width="18" style="border:none;"></td>
  <td width="81" style="border:none;"></td>
  <td width="61" style="border:none;"></td>
  <td width="18" style="border:none;"></td>
  <td width="169" style="border:none;"></td>
  <td width="18" style="border:none;"></td>
  <td width="15" style="border:none;"></td>
  <td width="191" style="border:none;"></td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div align="center" style="margin:0in 0in .0001pt;text-align:center;"><hr size="1" width="25%" noshade color="black" align="center"></div>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">CALCULATION
OF REGISTRATION FEE</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="34%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:34.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Title
  of securities<br>
  to be registered</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="12%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:12.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Amount
  to be<br>
  registered(1)(2)</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="14%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:14.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Proposed
  maximum<br>
  offering price per<br>
  unit(3)</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="14%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:14.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Proposed
  maximum<br>
  aggregate offering<br>
  price(3)</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="14%" colspan="2" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:14.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Amount
  of<br>
  registration<br>
  fee(3)</font></b></p>
  </td>
  <td width="1%" valign="bottom" style="border-bottom:solid windowtext 1.0pt;border-left:none;border-right:none;border-top:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="34%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:34.5%;">
  <p style="margin:0in 0in .0001pt 10.0pt;text-indent:-10.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Common
  stock, par value $1.00 per share(4)</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="12%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:12.0%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">13,400,000</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.3%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="13%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:13.2%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">49.335</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.3%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="12%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:12.7%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">592,020,000</font></p>
  </td>
  <td width="2%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:2.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.3%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">$</font></p>
  </td>
  <td width="12%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:12.7%;">
  <p align="right" style="margin:0in 0in .0001pt;text-align:right;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">42,211.03</font></p>
  </td>
  <td width="1%" valign="bottom" style="border:none;border-bottom:double windowtext 2.25pt;padding:0in 0in 0in 0in;width:1.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr height="0">
  <td width="258" style="border:none;"></td>
  <td width="19" style="border:none;"></td>
  <td width="90" style="border:none;"></td>
  <td width="19" style="border:none;"></td>
  <td width="10" style="border:none;"></td>
  <td width="99" style="border:none;"></td>
  <td width="19" style="border:none;"></td>
  <td width="10" style="border:none;"></td>
  <td width="95" style="border:none;"></td>
  <td width="19" style="border:none;"></td>
  <td width="10" style="border:none;"></td>
  <td width="95" style="border:none;"></td>
  <td width="7" style="border:none;"></td>
 </tr>
</table>

<div style="margin:0in 0in .0001pt;"><hr size="1" width="25%" noshade color="black" align="left"></div>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.88%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)</font></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in 0in 0in 0in;width:.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.16%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">As described in the
  Explanatory Note in this Registration Statement, the number of shares of
  common stock, par value $1.00 per share (the &#147;Common Stock&#148;) of Ecolab Inc.
  (&#147;Ecolab&#148;) registered hereby consists of (a)&nbsp;12,000,000 shares being
  registered for the first time pursuant to the Ecolab Inc. 2010 Stock
  Incentive Plan (the &#147;2010 Plan&#148;), plus (b)&nbsp;1,400,000 shares (the
  &#147;Carryover Shares&#148;) that were previously registered by Ecolab under the
  Ecolab Inc. 2005 Stock Incentive Plan (the &#147;2005 Plan&#148;) on Form&nbsp;S-8,
  filed with the Securities and Exchange Commission on November&nbsp;3, 2005
  (Registration Statement 333-129427) that remain available for future grants
  under the 2005 Plan as of May&nbsp;6, 2010 that may now be issued under the
  2010 Plan (the &#147;2010 Plan&#148;). A post-effective amendment to the foregoing
  Form&nbsp;S-8 to deregister the Carryover Shares is being filed
  contemporaneously with the filing of this Registration Statement.</font></p>
  </td>
 </tr>
 <tr>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.88%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in 0in 0in 0in;width:.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.16%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.88%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)</font></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in 0in 0in 0in;width:.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.16%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In addition, pursuant
  to Rule&nbsp;416&nbsp;under the Securities Act of 1933, as amended, this
  Registration Statement also covers an indeterminate number of additional
  shares of common stock of Ecolab to be offered or sold as a result of the
  anti-dilution provisions of the employee benefit plan described in this
  Registration Statement.</font></p>
  </td>
 </tr>
 <tr>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.88%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in 0in 0in 0in;width:.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.16%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.88%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)</font></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in 0in 0in 0in;width:.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.16%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Estimated solely for
  the purpose of calculating the registration fee in accordance with
  Rule&nbsp;457(h)(1)&nbsp;and (c)&nbsp;under the Securities Act, based upon
  the average of the high and low sale prices of the registrant&#146;s common stock
  on May&nbsp;3, 2010, as reported on the Consolidated Transaction Reporting
  System of the New York Stock Exchange. Ecolab is paying registration fees
  solely with respect to the 12,000,000 shares being newly registered hereby.
  The registration fee with respect to the Carryover Shares was paid upon
  filing of the Registration Statement on Form&nbsp;S-8 as described in
  footnote 1 above. Therefore, no further registration fee is required.</font></p>
  </td>
 </tr>
 <tr>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.88%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in 0in 0in 0in;width:.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.16%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="4%" valign="top" style="padding:0in 0in 0in 0in;width:4.88%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(4)</font></p>
  </td>
  <td width="0%" valign="bottom" style="padding:0in 0in 0in 0in;width:.96%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="94%" valign="top" style="padding:0in 0in 0in 0in;width:94.16%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Each share of common
  stock includes one preferred stock purchase right pursuant to the terms of
  the registrant&#146;s Rights Agreement dated as of February&nbsp;24, 2006.</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt .3in;text-indent:-.3in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="border-bottom:solid windowtext 3.0pt;border-left:none;border-right:none;border-top:solid windowtext 1.0pt;padding:1.0pt 0in 1.0pt 0in;">

<p style="border:none;margin:0in 0in .0001pt .3in;padding:0in;text-indent:-.3in;"><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>

</div>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<div>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">EXPLANATORY
NOTE</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:39.0pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The Ecolab Inc. (&#147;Ecolab&#148;)
stockholders approved the Ecolab Inc. 2010 Stock Incentive Plan (the &#147;2010 Plan&#148;)
on May&nbsp;6, 2010 (the &#147;Effective Date&#148;). The 2010 Plan provides that, in
addition to the 12,000,000 shares authorized for grant under the 2010 Plan (the
&#147;New Shares&#148;), shares remaining available for future grants under the Ecolab
Inc. 2005 Stock Incentive Plan (the &#147;2005 Plan&#148;) as of the Effective Date are
available for grant under the 2010 Plan. In addition, the number of shares
available for issuance under the 2010 Plan will be increased by the number of
shares subject to awards (made under the 2010 Plan or that are outstanding
under the 2005 Plan on the Effective Date) that expire, are forfeited or
terminated, or are settled in cash.&#160;
Ecolab&#146;s authority to grant new awards under the 2005 Plan terminated
upon stockholder approval of the 2010 Plan.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The purpose of this
Registration Statement is (i)&nbsp;to register the New Shares, and (ii)&nbsp;to
carry forward the Carryover Shares (i.e., the shares remaining available for
future grant as of the Effective Date under the 2005 Plan to the extent such shares
were previously registered) to this Registration Statement. The Carryover
Shares consist of 1,400,000 shares previously registered under the 2005 Plan on
Form&nbsp;S-8, filed with the Securities and Exchange Commission on November&nbsp;3,
2005 (Registration Statement 333-129427).&#160;
The Form&nbsp;S-8 for the 2005 Plan registered a total of 12,000,000
shares.&#160; A post-effective amendment to
the foregoing Form&nbsp;S-8 to deregister the Carryover Shares is being filed
contemporaneously with the filing of this Registration Statement.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Additional shares under
the 2005 Plan may become available in the future due to awards made under the
2005 Plan that are outstanding on the Effective Date expiring, being forfeited
or terminated, or settled in cash.&#160; Such
shares may also be registered for issuance under the 2010 Plan pursuant to
subsequent Registration Statements.</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">2<a name="PB_2_135221_7056"></a></font></p>

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<div style="font-family:Times New Roman;">

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">&nbsp;</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">PART&nbsp;I</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INFORMATION
REQUIRED</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">IN
THE SECTION&nbsp;10(a)&nbsp;PROSPECTUS</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The documents containing
the information specified in Part&nbsp;I of Form&nbsp;S-8 have been or will be
sent or given to participants as specified by Rule&nbsp;428(b)(1)&nbsp;under
the Securities Act of 1933 (the &#147;Securities Act&#148;) and the Note to Part&nbsp;I
of Form&nbsp;S-8.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">PART&nbsp;II</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INFORMATION
REQUIRED</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">IN
THE REGISTRATION STATEMENT</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 3.</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">&nbsp;&nbsp;&nbsp;
</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Incorporation of Documents by Reference.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Incorporation
by Reference</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The following documents
filed by Ecolab with the SEC are incorporated by reference in this Registration
Statement:</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Annual report on Form&nbsp;10-K for the
year ended December&nbsp;31, 2009;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">All other reports filed by Ecolab
pursuant to Section&nbsp;13(a)&nbsp;or 15(d)&nbsp;of the Securities Exchange
Act of 1934, as amended (the &#147;Exchange Act&#148;), since December&nbsp;31, 2009; and</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">The descriptions of Ecolab&#146;s common
stock, preferred stock and preferred stock purchase rights contained in its
registration statements on Form&nbsp;8-A, including any amendments or reports
filed for the purpose of updating these descriptions.</font></p>

<p style="margin:0in 0in .0001pt 1.0in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">All documents filed by
Ecolab with the SEC pursuant to Sections 13(a), 13(c), 14 and 15(d)&nbsp;of the
Exchange Act after the date of this Registration Statement&#160; (except for portions of Ecolab&#146;s current
reports furnished, as opposed to filed, on Form&nbsp;8-K), and prior to the
filing of a post-effective amendment which indicates that all securities
offered pursuant to this Registration Statement have been sold or that
deregisters all securities then remaining unsold, will be deemed to be
incorporated by reference in this Registration Statement and to be a part of
this Registration Statement from the date of filing of these documents.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Any statement contained
in a document incorporated, or deemed to be incorporated, by reference in this
Registration Statement shall be deemed to be modified or superseded for
purposes of this Registration Statement to the extent that a statement
contained in this Registration Statement or incorporated by reference or in any
other subsequently filed document that also is or is deemed to be incorporated
by reference modifies or supersedes the statement. Any statement so modified or
superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Registration Statement.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Independent
Registered Public Accounting Firm</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The financial
statements and management&#146;s assessment of the effectiveness of internal control
over financial reporting (which is included in Management&#146;s Report on Internal
Control over Financial Reporting) incorporated in this Registration Statement
by reference to the Annual Report on Form&nbsp;10-K for the year ended December&nbsp;31,
2009, have been so incorporated in reliance on the report of
PricewaterhouseCoopers LLP, an independent registered public accounting firm,
given on the authority of said firm as experts in auditing and accounting.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">With respect to the unaudited consolidated
financial information of Ecolab Inc. incorporated by reference in this
Registration Statement, PricewaterhouseCoopers LLP reported that they have
applied limited procedures in accordance with professional standards for a
review of such information.&nbsp; However, their separate report dated May&nbsp;6,
2010 with respect to the quarterly period ended March&nbsp;31, 2010, which is
incorporated by reference herein, states that they did not audit and they do
not express an opinion on that unaudited financial information.&nbsp;
Accordingly the degree of reliance on their report on such information should
be restricted in light of the limited nature of the review procedures
applied.&nbsp; PricewaterhouseCoopers LLP is not subject to the liability
provisions of Section&nbsp;11 of the </font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">3<a name="PB_3_135248_5335"></a></font></p>

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<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Securities Act for their report on the
unaudited financial information because these reports are not &#147;reports&#148; or &#147;parts&#148;
of the registration statement prepared or certified by PricewaterhouseCoopers
LLP within the meaning of Sections 7 and 11 of the Securities Act.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 4.</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">&nbsp;&nbsp;&nbsp;
</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Description of Securities.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not applicable.&nbsp;
Ecolab&#146;s common stock and preferred stock purchase rights to be offered and
sold pursuant to this registration statement are registered under Section&nbsp;12
of the Exchange Act.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 5.</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">&nbsp;&nbsp;&nbsp;
</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Interests of Named Experts and Counsel.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The validity of the
securities subject to this Registration Statement has&nbsp;been passed upon
by&nbsp;Michael C. McCormick, Associate General Counsel &#151; Corporate and
Assistant Secretary for Ecolab.&nbsp; Mr.&nbsp;McCormick beneficially owns, or
has the right to acquire,&nbsp;shares of Common Stock, including&nbsp;options
to purchase Common Stock under Ecolab stock incentive plans.&nbsp; Mr.&nbsp;McCormick
is eligible to participate in the 2010 Plan.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 6.</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">&nbsp;&nbsp;&nbsp;
</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Indemnification of Directors and Officers.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Subsection (a)&nbsp;of Section&nbsp;145
of the General Corporation Law of Delaware empowers a corporation to indemnify
any person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action, suit or proceeding, whether civil,
criminal, administrative or investigative (other than an action by or in the
right of the corporation), by reason of the fact that such person is or was a
director, officer, employee or agent of the corporation or is or was serving at
the request of the corporation as a director, officer, employee or agent of
another corporation or enterprise, against expenses (including attorneys&#146;
fees), judgments, fines and amounts paid in settlement actually and reasonably
incurred by such person in connection with such action, suit or proceeding if
such person acted in good faith and in a manner such person reasonably believed
to be in or not opposed to the best interests of the corporation, and with
respect to any criminal action or proceeding, had no reasonable cause to
believe such person&#146;s conduct was unlawful.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Subsection (b)&nbsp;of Section&nbsp;145
empowers a corporation to indemnify any person who was or is a party or
threatened to be made a party to any threatened, pending or completed action or
suit by or in the right of the corporation to procure a judgment in its favor
by reason of the fact that such person acted in any of the capacities set forth
above, against expenses (including attorney&#146;s fees) actually and reasonably
incurred by such person in connection with the defense or settlement of such
action or suit if such person acted under similar standards, except that no
indemnification may be made in respect of any claim, issue or matter as to
which such person shall have been adjudged to be liable to the corporation
unless and only to the extent that the Court of Chancery or the court in which
the action or suit was brought shall determine upon application that, despite
the adjudication of liability, but in view of all the circumstances of the case
the person is fairly and reasonably entitled to indemnity for the expenses
which the court shall deem proper.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Section&nbsp;145 further
provides that, to the extent a director or officer of a corporation has been
successful on the merits or otherwise in defense of any action, suit or
proceeding referred to in subsections (a)&nbsp;and (b)&nbsp;or in the defense
of any claim, issue or matter therein, the person shall be indemnified against
expenses (including attorneys&#146; fees) actually and reasonably incurred in
connection therewith; that indemnification provided for by Section&nbsp;145
shall not be deemed exclusive of any other rights to which the indemnified
party may be entitled; the right to indemnification and advancement of expenses
arising under a provision of the certificate of incorporation or bylaws shall
not be eliminated or impaired by an amendment to such provision after the
occurrence of the act or omission that is the subject of civil, criminal,
administrative or investigative action, suit or proceeding for which
indemnification or advancement of expenses is sought, unless the provision in
effect at the time of such act or commission explicitly authorizes such
elimination or impairment after such act or omission has occurred; and that the
scope of indemnification extends to directors, officers, employees or agents of
a constituent corporation absorbed in a consolidation or merger and persons
serving in that capacity at the request of the constituent corporation for
another.&nbsp; Section&nbsp;145 also empowers the corporation to purchase and
maintain insurance on behalf of a director or officer of the corporation
against any liability asserted against or incurred by the person in any such
capacity or arising out of the person&#146;s status as such, whether or not the
corporation would have the power to indemnify the person against such
liabilities under Section&nbsp;145, including liabilities under the Securities
Act.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Article&nbsp;V of Ecolab&#146;s
By-Laws provides for indemnification of Ecolab&#146;s officers and directors to the
full extent allowed by Delaware law.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">In addition, Article&nbsp;IV
of Ecolab&#146;s Restated Certificate of Incorporation provides that Ecolab&#146;s
directors do not have personal liability to Ecolab or its stockholders for
monetary damages for any breach of their fiduciary duty </font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">4<a name="PB_4_135259_5796"></a></font></p>

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<div style="font-family:Times New Roman;">

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">as directors, except (1)&nbsp;for
a breach of the duty of loyalty, (2)&nbsp;for acts or omissions not in good
faith or which involve intentional misconduct or knowing violation of the law, (3)&nbsp;for
willful or negligent violations of certain provisions under the General
Corporation Law of Delaware imposing certain requirements with respect to stock
repurchases, redemptions and dividends, or (4)&nbsp;for any transaction from
which the director derived an improper personal benefit.&nbsp; Subject to these
exceptions, under Article&nbsp;IV, directors do not have any personal liability
to Ecolab or its stockholders for any violation of their fiduciary duty.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Ecolab has directors and
officers liability insurance which protects each director or officer from
certain claims and suits, including stockholder derivative suits, even where
the director may be determined to not be entitled to indemnification under the
General Corporation Law of Delaware and claims and suits arising under the
Securities Act.&nbsp; The policy may also afford coverage under circumstances
where the facts do not justify a finding that the director or officer acted in
good faith and in a manner that was in or not opposed to the best interests of
Ecolab.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Ecolab has entered into
indemnification agreements with each of its directors.&nbsp; These
indemnification agreements provide for the prompt indemnification &#147;to the
fullest extent permitted by law&#148; and for the prompt advancement of expenses,
including attorneys&#146; fees and other costs, expenses and obligations paid or
incurred in connection with investigating, defending, being a witness or
participating in (including on appeal) any threatened, pending or completed
action, suit or proceeding related to the fact that the director is or was a
director, officer, employee, trustee, agent or fiduciary of Ecolab or is or was
serving at the request of Ecolab as a director, officer, employee, trustee,
agent or fiduciary of another corporation, partnership, joint venture, employee
benefit plan trust or other enterprise, or by reason of anything done or not
done by a director in any such capacity.&nbsp; The indemnification agreements
further provide that Ecolab has the burden of proving that a director is not
entitled to indemnification in any particular case.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The foregoing represents
a summary of the general effect of the General Corporation Law of Delaware,
Ecolab&#146;s By-Laws and Restated Certificate of Incorporation, Ecolab&#146;s directors
and officers liability insurance coverage and the indemnification agreements
for purposes of general description only.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 7.</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">&nbsp;&nbsp;&nbsp;
</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Exemption from Registration Claimed.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Not applicable.</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 8.</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">&nbsp;&nbsp;&nbsp;
</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Exhibits.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">The following is a
complete list of exhibits filed or incorporated by reference as part of this registration
statement:</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="9%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Exhibit&nbsp;No.</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="88%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:88.28%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Description</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp; 4.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Restated Certificate of
  Incorporation of Ecolab Inc., dated as of May&nbsp;6, 2010 (filed herewith
  electronically).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp; 4.2</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By-Laws, as amended
  through February&nbsp;26, 2010 (incorporated by reference to Exhibit&nbsp;3
  in Ecolab&#146;s Form&nbsp;8-K dated February&nbsp;26, 2010).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp; 5.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Opinion and Consent of
  Michael C. McCormick (filed herewith electronically).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Ecolab Inc. 2010 Stock
  Incentive Plan (incorporated by reference to Exhibit&nbsp;C in Ecolab&#146;s proxy
  statement for its 2010 Annual Meeting of Stockholders, filed on
  March&nbsp;19, 2010).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">15.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Letter Regarding Unaudited Interim
  Financial Information (filed herewith electronically).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Independent
  Registered Public Accounting Firm (filed herewith electronically).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.2</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Michael C.
  McCormick (included in Exhibit&nbsp;5.1).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">24.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Powers of Attorney
  (filed herewith electronically).</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">5<a name="PB_5_135444_2897"></a></font></p>

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<div style="font-family:Times New Roman;">

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">Item 9.</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">&nbsp;&nbsp;&nbsp;
</font></b><b><font size="2" style="font-size:10.0pt;font-weight:bold;">Undertakings.</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(a)&nbsp;</font><font size="2" style="font-size:10.0pt;">&nbsp; </font><font size="2" style="font-size:10.0pt;">The undersigned registrant hereby
undertakes:</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.25in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(1)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">To file, during any period in which
offers or sales are being made, a post-effective amendment to this registration
statement:</font></p>

<p style="margin:0in 0in .0001pt 1.25in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.75in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(i)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">To include any prospectus required by Section&nbsp;10(a)(3)&nbsp;of
the Securities Act;</font></p>

<p style="margin:0in 0in .0001pt 1.75in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.75in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(ii)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">To reflect in the prospectus any facts or
events arising after the effective date of this registration statement (or the
most recent post-effective amendment hereof) which, individually or in the
aggregate, represent a fundamental change in the information set forth in this
registration statement.&nbsp; Notwithstanding the foregoing, any increase or
decrease in volume of securities offered (if the total dollar value of
securities offered would not exceed that which was registered) and any
deviation from the low or high end of the estimated maximum offering range may
be reflected in the form of prospectus filed with the SEC pursuant to Rule&nbsp;424(b)&nbsp;under
the Securities Act if, in the aggregate, the changes in volume and price
represent no more than a 20% change in the maximum aggregate offering price set
forth in the &#147;Calculation of Registration Fee&#148; table in the effective
Registration Statement;</font></p>

<p style="margin:0in 0in .0001pt 1.75in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.75in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(iii)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">To include any material information with
respect to the plan of distribution not previously disclosed in this Registration
Statement or any material change to such information in this Registration
Statement.</font></p>

<p style="margin:0in 0in .0001pt 1.75in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.25in;"><u><font size="2" face="Times New Roman" style="font-size:10.0pt;">Provided</font></u><font size="2" style="font-size:10.0pt;">, <u>however</u>, that paragraphs (a)(1)(i)&nbsp;and
(a)(1)(ii)&nbsp;above do not apply if the information required to be included
in a post-effective amendment by those paragraphs is contained in periodic
reports filed with or furnished to the SEC by the registrant pursuant to Section&nbsp;13
or Section&nbsp;15(d)&nbsp;of the Exchange Act that are incorporated by
reference in this Registration Statement.</font></p>

<p style="margin:0in 0in .0001pt 1.25in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.25in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(2)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">That, for the purpose of determining any
liability under the Securities Act, each such post-effective amendment shall be
deemed to be a new Registration Statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.</font></p>

<p style="margin:0in 0in .0001pt 1.25in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt 1.25in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(3)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">To remove from registration by means of a
post-effective amendment any of the securities being registered which remain
unsold at the termination of the offering.</font></p>

<p style="margin:0in 0in .0001pt 1.25in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt .75in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(b)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">The undersigned registrant hereby
undertakes that, for purposes of determining any liability under the Securities
Act, each filing of the registrant&#146;s annual report pursuant to Section&nbsp;13(a)&nbsp;or
Section&nbsp;15(d)&nbsp;of the Exchange Act (and where applicable, each filing
of an employee benefit plan&#146;s annual report pursuant to Section&nbsp;15(d)&nbsp;of
the Exchange Act) that is incorporated by reference in this Registration
Statement shall be deemed to be a new Registration Statement relating to the
securities offered therein, and the offering of such securities at that time shall
be deemed to be the initial bona fide offering thereof.</font></p>

<p style="margin:0in 0in .0001pt .75in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt .75in;text-indent:-.5in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">(c)</font><font size="1" style="font-size:3.0pt;">&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160;&#160; </font><font size="2" style="font-size:10.0pt;">Insofar as indemnification for
liabilities arising under the Securities Act may be permitted to directors,
officers and controlling persons of the registrant pursuant to the foregoing
provisions, or otherwise, the registrant has been advised that in the opinion
of the SEC such indemnification is against public policy as expressed in the
Securities Act, and is therefore, unenforceable.&nbsp; In the event that a
claim for indemnification against such liabilities (other than the payment by
the registrant of expenses incurred or paid by a director, officer or
controlling person of the registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the
Securities Act and will be governed by the final adjudication of such issue.</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">6<a name="PB_6_135519_3020"></a></font></p>

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</div>
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<div style="font-family:Times New Roman;">

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">SIGNATURES</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.75in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the
requirements of the Securities Act of 1933, the registrant certifies that it
has reasonable grounds to believe that it meets all of the requirements of
filing on Form&nbsp;S-8 and has duly caused this registration statement to be
signed on its behalf by the undersigned, thereunto duly authorized, in the City
of St. Paul, State of Minnesota, on May&nbsp;7, 2010.</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.5%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="50%" colspan="2" valign="top" style="padding:0in 0in 0in 0in;width:50.5%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">ECOLAB
  INC.</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="47%" valign="top" style="padding:0in 0in 0in 0in;width:47.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By:</font></p>
  </td>
  <td width="47%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:47.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Douglas M.
  Baker,&nbsp;Jr.</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.5%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="3%" valign="top" style="padding:0in 0in 0in 0in;width:3.42%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="47%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:47.08%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Douglas M.
  Baker,&nbsp;Jr.</font><font size="2" style="font-size:10.0pt;">  <br>
  </font><font size="2" style="font-size:10.0pt;">Chairman of the
  Board, President and Chief Executive Officer</font></p>
  </td>
 </tr>
</table>

<p style="margin:0in 0in .0001pt;text-indent:3.75in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p style="margin:0in 0in .0001pt;text-indent:.75in;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Pursuant to the
requirements of the Securities Act of 1933, this registration statement has
been signed on May&nbsp;7, 2010 by the following persons in the capacities
indicated.</font></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="49%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Signature</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="1" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Title</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Douglas M. Baker,&nbsp;Jr.</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" rowspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chairman of the Board,
  President and Chief Executive Officer (principal executive officer) and
  Director</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Douglas M. Baker,&nbsp;Jr.</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Steven L. Fritze</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" rowspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Chief Financial Officer
  (principal financial officer)</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Steven L. Fritze</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/John J. Corkrean</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" rowspan="2" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Vice President and
  Corporate Controller (principal accounting officer)</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">John J. Corkrean</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">/s/Michael C. McCormick</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Directors</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Michael C. McCormick,
  as attorney-in-fact for Barbara J. Beck, Les S. Biller, Jerry A. Grundhofer,
  Joel W. Johnson, Jerry W. Levin, Robert L. Lumpkins, C. Scott O&#146;Hara,
  Victoria J. Reich and John J. Zillmer</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Director not signing:
  Arthur J. Higgins</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="49%" valign="top" style="padding:0in 0in 0in 0in;width:49.0%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
 </tr>
</table>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">7<a name="PB_7_135806_7748"></a></font></p>

<div style="margin:0in 0in .0001pt;"><hr size="3" width="100%" noshade color="#010101" align="left"></div>

</div>
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<br clear="all" style="page-break-before:always;">


<div>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">ECOLAB
INC.</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">REGISTRATION
STATEMENT ON FORM&nbsp;S-8</font></b></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="2" face="Times New Roman" style="font-size:10.0pt;font-weight:bold;">INDEX
TO EXHIBITS</font></b></p>

<p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>

<table border="0" cellspacing="0" cellpadding="0" width="100%" style="border-collapse:collapse;width:100.0%;">
 <tr>
  <td width="9%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Exhibit&nbsp;No.</font></b></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:1.0pt;font-weight:bold;">&nbsp;</font></b></p>
  </td>
  <td width="88%" valign="bottom" style="border:none;border-bottom:solid windowtext 1.0pt;padding:0in 0in 0in 0in;width:88.28%;">
  <p align="center" style="margin:0in 0in .0001pt;text-align:center;"><b><font size="1" face="Times New Roman" style="font-size:8.0pt;font-weight:bold;">Description</font></b></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp; 4.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="border:none;padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Restated Certificate of
  Incorporation of Ecolab Inc., dated as of May&nbsp;6, 2010 (filed herewith
  electronically).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp; 4.2</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">By-Laws, as amended
  through February&nbsp;26, 2010 (incorporated by reference to Exhibit&nbsp;3
  in Ecolab&#146;s Form&nbsp;8-K dated February&nbsp;26, 2010).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp; 5.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Opinion and Consent of
  Michael C. McCormick (filed herewith electronically).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">10.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Ecolab Inc. 2010 Stock
  Incentive Plan (incorporated by reference to Exhibit&nbsp;C in Ecolab&#146;s proxy
  statement for its 2010 Annual Meeting of Stockholders, filed on
  March&nbsp;19, 2010).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">15.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Letter Regarding Unaudited Interim
  Financial Information (filed herewith electronically).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.1</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Independent
  Registered Public Accounting Firm (filed herewith electronically).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">23.2</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Consent of Michael C.
  McCormick (included in Exhibit&nbsp;5.1).</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="2%" valign="bottom" style="padding:0in 0in 0in 0in;width:2.14%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">&nbsp;</font></p>
  </td>
 </tr>
 <tr>
  <td width="9%" valign="top" style="padding:0in 0in 0in 0in;width:9.6%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">24.1</font></p>
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  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:1.0pt;">&nbsp;</font></p>
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  <td width="88%" valign="top" style="padding:0in 0in 0in 0in;width:88.28%;">
  <p style="margin:0in 0in .0001pt;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">Powers of Attorney
  (filed herewith electronically).</font></p>
  </td>
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</table>

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<p align="center" style="margin:0in 0in .0001pt;text-align:center;"><font size="2" face="Times New Roman" style="font-size:10.0pt;">8<a name="PB_8_135926_141"></a></font></p>

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[{"type": "S-8", "sequence": "1", "filename": "a10-9579_1s8.htm", "description": "S-8", "secsgml_size_bytes": 111994}]
{"company-data": {"conformed-name": "ECOLAB INC", "cik": "0000031462", "assigned-sic": "2840", "irs-number": "410231510", "state-of-incorporation": "DE", "fiscal-year-end": "1231"}, "filing-values": {"form-type": "S-8", "act": "33", "file-number": "333-166646", "film-number": "10812855"}, "business-address": {"street1": "ECOLAB CORPORATE CENTER", "street2": "370 WABASHA STREET NORTH", "city": "ST PAUL", "state": "MN", "zip": "55102", "phone": "6512932233"}, "mail-address": {"street1": "ECOLAB CORPORATE CENTER", "street2": "370 WABASHA STREET NORTH", "city": "ST. PAUL", "state": "MN", "zip": "55102"}, "former-company": {"former-conformed-name": "ECONOMICS LABORATORY INC", "date-changed": "19861203"}}
As filed
with the Securities and Exchange Commission on May 7, 2010
Registration
No. 333-
UNITED
STATES SECURITIES
AND
EXCHANGE COMMISSION
WASHINGTON,
D.C. 20549
FORM S-8
REGISTRATION STATEMENT
UNDER THE SECURITIES ACT OF 1933
ECOLAB
INC.
(Exact name of
registrant as specified in its charter)
Delaware
41-0231510
(State or Other
  Jurisdiction of
Incorporation or Organization)
(I.R.S. Employer
Identification No.)
370
  Wabasha Street North
St.
  Paul, Minnesota
55102
(Address of
  Principal Executive Offices)
(Zip Code)
ECOLAB
INC. 2010 STOCK INCENTIVE PLAN
(Full Title of the
Plan)
Lawrence
T. Bell, Esq.
General
Counsel
Ecolab
Inc.
370
Wabasha Street North
St.
Paul, Minnesota 55102
(651)
293-2981
(Name, address and
telephone number,
including area
code, of agent for service)
Indicate by check mark
whether the registrant is a large accelerated filer, an accelerated filer, a
non-accelerated filer, or a smaller reporting company. See the definitions of "large
accelerated filer," "accelerated filer" and "smaller reporting company" in Rule 12b-2
of the Exchange Act. (Check one):
Large accelerated
  filer
x
Accelerated filer
o
Non-accelerated
  filer
o
Smaller reporting
  company
o
(Do not check if
  a smaller reporting company)
CALCULATION
OF REGISTRATION FEE
Title
  of securities
to be registered
Amount
  to be
registered(1)(2)
Proposed
  maximum
offering price per
unit(3)
Proposed
  maximum
aggregate offering
price(3)
Amount
  of
registration
fee(3)
Common
  stock, par value $1.00 per share(4)
13,400,000
$
49.335
$
592,020,000
$
42,211.03
(1)
As described in the
  Explanatory Note in this Registration Statement, the number of shares of
  common stock, par value $1.00 per share (the "Common Stock") of Ecolab Inc.
  ("Ecolab") registered hereby consists of (a) 12,000,000 shares being
  registered for the first time pursuant to the Ecolab Inc. 2010 Stock
  Incentive Plan (the "2010 Plan"), plus (b) 1,400,000 shares (the
  "Carryover Shares") that were previously registered by Ecolab under the
  Ecolab Inc. 2005 Stock Incentive Plan (the "2005 Plan") on Form S-8,
  filed with the Securities and Exchange Commission on November 3, 2005
  (Registration Statement 333-129427) that remain available for future grants
  under the 2005 Plan as of May 6, 2010 that may now be issued under the
  2010 Plan (the "2010 Plan"). A post-effective amendment to the foregoing
  Form S-8 to deregister the Carryover Shares is being filed
  contemporaneously with the filing of this Registration Statement.
(2)
In addition, pursuant
  to Rule 416 under the Securities Act of 1933, as amended, this
  Registration Statement also covers an indeterminate number of additional
  shares of common stock of Ecolab to be offered or sold as a result of the
  anti-dilution provisions of the employee benefit plan described in this
  Registration Statement.
(3)
Estimated solely for
  the purpose of calculating the registration fee in accordance with
  Rule 457(h)(1) and (c) under the Securities Act, based upon
  the average of the high and low sale prices of the registrant's common stock
  on May 3, 2010, as reported on the Consolidated Transaction Reporting
  System of the New York Stock Exchange. Ecolab is paying registration fees
  solely with respect to the 12,000,000 shares being newly registered hereby.
  The registration fee with respect to the Carryover Shares was paid upon
  filing of the Registration Statement on Form S-8 as described in
  footnote 1 above. Therefore, no further registration fee is required.
(4)
Each share of common
  stock includes one preferred stock purchase right pursuant to the terms of
  the registrant's Rights Agreement dated as of February 24, 2006.
EXPLANATORY
NOTE
The Ecolab Inc. ("Ecolab")
stockholders approved the Ecolab Inc. 2010 Stock Incentive Plan (the "2010 Plan")
on May 6, 2010 (the "Effective Date"). The 2010 Plan provides that, in
addition to the 12,000,000 shares authorized for grant under the 2010 Plan (the
"New Shares"), shares remaining available for future grants under the Ecolab
Inc. 2005 Stock Incentive Plan (the "2005 Plan") as of the Effective Date are
available for grant under the 2010 Plan. In addition, the number of shares
available for issuance under the 2010 Plan will be increased by the number of
shares subject to awards (made under the 2010 Plan or that are outstanding
under the 2005 Plan on the Effective Date) that expire, are forfeited or
terminated, or are settled in cash. 
Ecolab's authority to grant new awards under the 2005 Plan terminated
upon stockholder approval of the 2010 Plan.
The purpose of this
Registration Statement is (i) to register the New Shares, and (ii) to
carry forward the Carryover Shares (i.e., the shares remaining available for
future grant as of the Effective Date under the 2005 Plan to the extent such shares
were previously registered) to this Registration Statement. The Carryover
Shares consist of 1,400,000 shares previously registered under the 2005 Plan on
Form S-8, filed with the Securities and Exchange Commission on November 3,
2005 (Registration Statement 333-129427). 
The Form S-8 for the 2005 Plan registered a total of 12,000,000
shares.  A post-effective amendment to
the foregoing Form S-8 to deregister the Carryover Shares is being filed
contemporaneously with the filing of this Registration Statement.
Additional shares under
the 2005 Plan may become available in the future due to awards made under the
2005 Plan that are outstanding on the Effective Date expiring, being forfeited
or terminated, or settled in cash.  Such
shares may also be registered for issuance under the 2010 Plan pursuant to
subsequent Registration Statements.
2
PART I
INFORMATION
REQUIRED
IN
THE SECTION 10(a) PROSPECTUS
The documents containing
the information specified in Part I of Form S-8 have been or will be
sent or given to participants as specified by Rule 428(b)(1) under
the Securities Act of 1933 (the "Securities Act") and the Note to Part I
of Form S-8.
PART II
INFORMATION
REQUIRED
IN
THE REGISTRATION STATEMENT
Item 3.
Incorporation of Documents by Reference.
Incorporation
by Reference
The following documents
filed by Ecolab with the SEC are incorporated by reference in this Registration
Statement:
(1)
Annual report on Form 10-K for the
year ended December 31, 2009;
(2)
All other reports filed by Ecolab
pursuant to Section 13(a) or 15(d) of the Securities Exchange
Act of 1934, as amended (the "Exchange Act"), since December 31, 2009; and
(3)
The descriptions of Ecolab's common
stock, preferred stock and preferred stock purchase rights contained in its
registration statements on Form 8-A, including any amendments or reports
filed for the purpose of updating these descriptions.
All documents filed by
Ecolab with the SEC pursuant to Sections 13(a), 13(c), 14 and 15(d) of the
Exchange Act after the date of this Registration Statement  (except for portions of Ecolab's current
reports furnished, as opposed to filed, on Form 8-K), and prior to the
filing of a post-effective amendment which indicates that all securities
offered pursuant to this Registration Statement have been sold or that
deregisters all securities then remaining unsold, will be deemed to be
incorporated by reference in this Registration Statement and to be a part of
this Registration Statement from the date of filing of these documents.
Any statement contained
in a document incorporated, or deemed to be incorporated, by reference in this
Registration Statement shall be deemed to be modified or superseded for
purposes of this Registration Statement to the extent that a statement
contained in this Registration Statement or incorporated by reference or in any
other subsequently filed document that also is or is deemed to be incorporated
by reference modifies or supersedes the statement. Any statement so modified or
superseded shall not be deemed, except as so modified or superseded, to
constitute a part of this Registration Statement.
Independent
Registered Public Accounting Firm
The financial
statements and management's assessment of the effectiveness of internal control
over financial reporting (which is included in Management's Report on Internal
Control over Financial Reporting) incorporated in this Registration Statement
by reference to the Annual Report on Form 10-K for the year ended December 31,
2009, have been so incorporated in reliance on the report of
PricewaterhouseCoopers LLP, an independent registered public accounting firm,
given on the authority of said firm as experts in auditing and accounting.
With respect to the unaudited consolidated
financial information of Ecolab Inc. incorporated by reference in this
Registration Statement, PricewaterhouseCoopers LLP reported that they have
applied limited procedures in accordance with professional standards for a
review of such information.  However, their separate report dated May 6,
2010 with respect to the quarterly period ended March 31, 2010, which is
incorporated by reference herein, states that they did not audit and they do
not express an opinion on that unaudited financial information. 
Accordingly the degree of reliance on their report on such information should
be restricted in light of the limited nature of the review procedures
applied.  PricewaterhouseCoopers LLP is not subject to the liability
provisions of Section 11 of the
3
Securities Act for their report on the
unaudited financial information because these reports are not "reports" or "parts"
of the registration statement prepared or certified by PricewaterhouseCoopers
LLP within the meaning of Sections 7 and 11 of the Securities Act.
Item 4.
Description of Securities.
Not applicable. 
Ecolab's common stock and preferred stock purchase rights to be offered and
sold pursuant to this registration statement are registered under Section 12
of the Exchange Act.
Item 5.
Interests of Named Experts and Counsel.
The validity of the
securities subject to this Registration Statement has been passed upon
by Michael C. McCormick, Associate General Counsel — Corporate and
Assistant Secretary for Ecolab.  Mr. McCormick beneficially owns, or
has the right to acquire, shares of Common Stock, including options
to purchase Common Stock under Ecolab stock incentive plans.  Mr. McCormick
is eligible to participate in the 2010 Plan.
Item 6.
Indemnification of Directors and Officers.
Subsection (a) of Section 145
of the General Corporation Law of Delaware empowers a corporation to indemnify
any person who was or is a party or is threatened to be made a party to any
threatened, pending or completed action, suit or proceeding, whether civil,
criminal, administrative or investigative (other than an action by or in the
right of the corporation), by reason of the fact that such person is or was a
director, officer, employee or agent of the corporation or is or was serving at
the request of the corporation as a director, officer, employee or agent of
another corporation or enterprise, against expenses (including attorneys'
fees), judgments, fines and amounts paid in settlement actually and reasonably
incurred by such person in connection with such action, suit or proceeding if
such person acted in good faith and in a manner such person reasonably believed
to be in or not opposed to the best interests of the corporation, and with
respect to any criminal action or proceeding, had no reasonable cause to
believe such person's conduct was unlawful.
Subsection (b) of Section 145
empowers a corporation to indemnify any person who was or is a party or
threatened to be made a party to any threatened, pending or completed action or
suit by or in the right of the corporation to procure a judgment in its favor
by reason of the fact that such person acted in any of the capacities set forth
above, against expenses (including attorney's fees) actually and reasonably
incurred by such person in connection with the defense or settlement of such
action or suit if such person acted under similar standards, except that no
indemnification may be made in respect of any claim, issue or matter as to
which such person shall have been adjudged to be liable to the corporation
unless and only to the extent that the Court of Chancery or the court in which
the action or suit was brought shall determine upon application that, despite
the adjudication of liability, but in view of all the circumstances of the case
the person is fairly and reasonably entitled to indemnity for the expenses
which the court shall deem proper.
Section 145 further
provides that, to the extent a director or officer of a corporation has been
successful on the merits or otherwise in defense of any action, suit or
proceeding referred to in subsections (a) and (b) or in the defense
of any claim, issue or matter therein, the person shall be indemnified against
expenses (including attorneys' fees) actually and reasonably incurred in
connection therewith; that indemnification provided for by Section 145
shall not be deemed exclusive of any other rights to which the indemnified
party may be entitled; the right to indemnification and advancement of expenses
arising under a provision of the certificate of incorporation or bylaws shall
not be eliminated or impaired by an amendment to such provision after the
occurrence of the act or omission that is the subject of civil, criminal,
administrative or investigative action, suit or proceeding for which
indemnification or advancement of expenses is sought, unless the provision in
effect at the time of such act or commission explicitly authorizes such
elimination or impairment after such act or omission has occurred; and that the
scope of indemnification extends to directors, officers, employees or agents of
a constituent corporation absorbed in a consolidation or merger and persons
serving in that capacity at the request of the constituent corporation for
another.  Section 145 also empowers the corporation to purchase and
maintain insurance on behalf of a director or officer of the corporation
against any liability asserted against or incurred by the person in any such
capacity or arising out of the person's status as such, whether or not the
corporation would have the power to indemnify the person against such
liabilities under Section 145, including liabilities under the Securities
Act.
Article V of Ecolab's
By-Laws provides for indemnification of Ecolab's officers and directors to the
full extent allowed by Delaware law.
In addition, Article IV
of Ecolab's Restated Certificate of Incorporation provides that Ecolab's
directors do not have personal liability to Ecolab or its stockholders for
monetary damages for any breach of their fiduciary duty
4
as directors, except (1) for
a breach of the duty of loyalty, (2) for acts or omissions not in good
faith or which involve intentional misconduct or knowing violation of the law, (3) for
willful or negligent violations of certain provisions under the General
Corporation Law of Delaware imposing certain requirements with respect to stock
repurchases, redemptions and dividends, or (4) for any transaction from
which the director derived an improper personal benefit.  Subject to these
exceptions, under Article IV, directors do not have any personal liability
to Ecolab or its stockholders for any violation of their fiduciary duty.
Ecolab has directors and
officers liability insurance which protects each director or officer from
certain claims and suits, including stockholder derivative suits, even where
the director may be determined to not be entitled to indemnification under the
General Corporation Law of Delaware and claims and suits arising under the
Securities Act.  The policy may also afford coverage under circumstances
where the facts do not justify a finding that the director or officer acted in
good faith and in a manner that was in or not opposed to the best interests of
Ecolab.
Ecolab has entered into
indemnification agreements with each of its directors.  These
indemnification agreements provide for the prompt indemnification "to the
fullest extent permitted by law" and for the prompt advancement of expenses,
including attorneys' fees and other costs, expenses and obligations paid or
incurred in connection with investigating, defending, being a witness or
participating in (including on appeal) any threatened, pending or completed
action, suit or proceeding related to the fact that the director is or was a
director, officer, employee, trustee, agent or fiduciary of Ecolab or is or was
serving at the request of Ecolab as a director, officer, employee, trustee,
agent or fiduciary of another corporation, partnership, joint venture, employee
benefit plan trust or other enterprise, or by reason of anything done or not
done by a director in any such capacity.  The indemnification agreements
further provide that Ecolab has the burden of proving that a director is not
entitled to indemnification in any particular case.
The foregoing represents
a summary of the general effect of the General Corporation Law of Delaware,
Ecolab's By-Laws and Restated Certificate of Incorporation, Ecolab's directors
and officers liability insurance coverage and the indemnification agreements
for purposes of general description only.
Item 7.
Exemption from Registration Claimed.
Not applicable.
Item 8.
Exhibits.
The following is a
complete list of exhibits filed or incorporated by reference as part of this registration
statement:
Exhibit No.
Description
4.1
Restated Certificate of
  Incorporation of Ecolab Inc., dated as of May 6, 2010 (filed herewith
  electronically).
4.2
By-Laws, as amended
  through February 26, 2010 (incorporated by reference to Exhibit 3
  in Ecolab's Form 8-K dated February 26, 2010).
5.1
Opinion and Consent of
  Michael C. McCormick (filed herewith electronically).
10.1
Ecolab Inc. 2010 Stock
  Incentive Plan (incorporated by reference to Exhibit C in Ecolab's proxy
  statement for its 2010 Annual Meeting of Stockholders, filed on
  March 19, 2010).
15.1
Letter Regarding Unaudited Interim
  Financial Information (filed herewith electronically).
23.1
Consent of Independent
  Registered Public Accounting Firm (filed herewith electronically).
23.2
Consent of Michael C.
  McCormick (included in Exhibit 5.1).
24.1
Powers of Attorney
  (filed herewith electronically).
5
Item 9.
Undertakings.
(a)
The undersigned registrant hereby
undertakes:
(1)
To file, during any period in which
offers or sales are being made, a post-effective amendment to this registration
statement:
(i)
To include any prospectus required by Section 10(a)(3) of
the Securities Act;
(ii)
To reflect in the prospectus any facts or
events arising after the effective date of this registration statement (or the
most recent post-effective amendment hereof) which, individually or in the
aggregate, represent a fundamental change in the information set forth in this
registration statement.  Notwithstanding the foregoing, any increase or
decrease in volume of securities offered (if the total dollar value of
securities offered would not exceed that which was registered) and any
deviation from the low or high end of the estimated maximum offering range may
be reflected in the form of prospectus filed with the SEC pursuant to Rule 424(b) under
the Securities Act if, in the aggregate, the changes in volume and price
represent no more than a 20% change in the maximum aggregate offering price set
forth in the "Calculation of Registration Fee" table in the effective
Registration Statement;
(iii)
To include any material information with
respect to the plan of distribution not previously disclosed in this Registration
Statement or any material change to such information in this Registration
Statement.
Provided
,
however
, that paragraphs (a)(1)(i) and
(a)(1)(ii) above do not apply if the information required to be included
in a post-effective amendment by those paragraphs is contained in periodic
reports filed with or furnished to the SEC by the registrant pursuant to Section 13
or Section 15(d) of the Exchange Act that are incorporated by
reference in this Registration Statement.
(2)
That, for the purpose of determining any
liability under the Securities Act, each such post-effective amendment shall be
deemed to be a new Registration Statement relating to the securities offered
therein, and the offering of such securities at that time shall be deemed to be
the initial bona fide offering thereof.
(3)
To remove from registration by means of a
post-effective amendment any of the securities being registered which remain
unsold at the termination of the offering.
(b)
The undersigned registrant hereby
undertakes that, for purposes of determining any liability under the Securities
Act, each filing of the registrant's annual report pursuant to Section 13(a) or
Section 15(d) of the Exchange Act (and where applicable, each filing
of an employee benefit plan's annual report pursuant to Section 15(d) of
the Exchange Act) that is incorporated by reference in this Registration
Statement shall be deemed to be a new Registration Statement relating to the
securities offered therein, and the offering of such securities at that time shall
be deemed to be the initial bona fide offering thereof.
(c)
Insofar as indemnification for
liabilities arising under the Securities Act may be permitted to directors,
officers and controlling persons of the registrant pursuant to the foregoing
provisions, or otherwise, the registrant has been advised that in the opinion
of the SEC such indemnification is against public policy as expressed in the
Securities Act, and is therefore, unenforceable.  In the event that a
claim for indemnification against such liabilities (other than the payment by
the registrant of expenses incurred or paid by a director, officer or
controlling person of the registrant in the successful defense of any action,
suit or proceeding) is asserted by such director, officer or controlling person
in connection with the securities being registered, the registrant will, unless
in the opinion of its counsel the matter has been settled by controlling
precedent, submit to a court of appropriate jurisdiction the question whether
such indemnification by it is against public policy as expressed in the
Securities Act and will be governed by the final adjudication of such issue.
6
SIGNATURES
Pursuant to the
requirements of the Securities Act of 1933, the registrant certifies that it
has reasonable grounds to believe that it meets all of the requirements of
filing on Form S-8 and has duly caused this registration statement to be
signed on its behalf by the undersigned, thereunto duly authorized, in the City
of St. Paul, State of Minnesota, on May 7, 2010.
ECOLAB
  INC.
By:
/s/Douglas M.
  Baker, Jr.
Douglas M.
  Baker, Jr.
Chairman of the
  Board, President and Chief Executive Officer
Pursuant to the
requirements of the Securities Act of 1933, this registration statement has
been signed on May 7, 2010 by the following persons in the capacities
indicated.
Signature
Title
/s/Douglas M. Baker, Jr.
Chairman of the Board,
  President and Chief Executive Officer (principal executive officer) and
  Director
Douglas M. Baker, Jr.
/s/Steven L. Fritze
Chief Financial Officer
  (principal financial officer)
Steven L. Fritze
/s/John J. Corkrean
Vice President and
  Corporate Controller (principal accounting officer)
John J. Corkrean
/s/Michael C. McCormick
Directors
Michael C. McCormick,
  as attorney-in-fact for Barbara J. Beck, Les S. Biller, Jerry A. Grundhofer,
  Joel W. Johnson, Jerry W. Levin, Robert L. Lumpkins, C. Scott O'Hara,
  Victoria J. Reich and John J. Zillmer
Director not signing:
  Arthur J. Higgins
7
ECOLAB
INC.
REGISTRATION
STATEMENT ON FORM S-8
INDEX
TO EXHIBITS
Exhibit No.
Description
4.1
Restated Certificate of
  Incorporation of Ecolab Inc., dated as of May 6, 2010 (filed herewith
  electronically).
4.2
By-Laws, as amended
  through February 26, 2010 (incorporated by reference to Exhibit 3
  in Ecolab's Form 8-K dated February 26, 2010).
5.1
Opinion and Consent of
  Michael C. McCormick (filed herewith electronically).
10.1
Ecolab Inc. 2010 Stock
  Incentive Plan (incorporated by reference to Exhibit C in Ecolab's proxy
  statement for its 2010 Annual Meeting of Stockholders, filed on
  March 19, 2010).
15.1
Letter Regarding Unaudited Interim
  Financial Information (filed herewith electronically).
23.1
Consent of Independent
  Registered Public Accounting Firm (filed herewith electronically).
23.2
Consent of Michael C.
  McCormick (included in Exhibit 5.1).
24.1
Powers of Attorney
  (filed herewith electronically).
8