<?xml version="1.0" encoding="UTF-8"?><edgarSubmission xmlns="http://www.sec.gov/edgar/ownership" xmlns:com="http://www.sec.gov/edgar/common">
  <headerData>
    <submissionType>144</submissionType>
    <filerInfo>
      <filer>
        <filerCredentials>
          <cik>0001430122</cik>
          <ccc>XXXXXXXX</ccc>
        </filerCredentials>
      </filer>
      <liveTestFlag>LIVE</liveTestFlag>



    </filerInfo>
  </headerData>
  <formData>
    <issuerInfo>
      <issuerCik>0001421517</issuerCik>
      <issuerName>Energy Recovery, Inc.</issuerName>
      <secFileNumber>001-34112</secFileNumber>
      <issuerAddress>
        <com:street1>1717 DOOLITTLE DRIVE</com:street1>
        <com:city>SAN LEANDRO</com:city>
        <com:stateOrCountry>CA</com:stateOrCountry>
        <com:zipCode>94577</com:zipCode>
      </issuerAddress>
      <issuerContactPhone>(510) 483-7370</issuerContactPhone>
      <nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>Hanstveit Arve</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
      <relationshipsToIssuer>
        <relationshipToIssuer>Director</relationshipToIssuer>
      </relationshipsToIssuer>
    </issuerInfo>
    <securitiesInformation>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <brokerOrMarketmakerDetails>
        <name>Fidelity Brokerage Services LLC</name>
        <address>
          <com:street1>900 Salem Street</com:street1>
          <com:city>Smithfield</com:city>
          <com:stateOrCountry>RI</com:stateOrCountry>
          <com:zipCode>02917</com:zipCode>
        </address>
      </brokerOrMarketmakerDetails>
      <noOfUnitsSold>15327</noOfUnitsSold>
      <aggregateMarketValue>366091.18</aggregateMarketValue>
      <noOfUnitsOutstanding>56347563</noOfUnitsOutstanding>
      <approxSaleDate>06/01/2023</approxSaleDate>
      <securitiesExchangeName>NASDAQ</securitiesExchangeName>
    </securitiesInformation>
    <securitiesToBeSold>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <acquiredDate>06/01/2023</acquiredDate>
      <natureOfAcquisitionTransaction>Option Granted - 06/23/2016</natureOfAcquisitionTransaction>
      <nameOfPersonfromWhomAcquired>Issuer</nameOfPersonfromWhomAcquired>
      <isGiftTransaction>N</isGiftTransaction>
      <amountOfSecuritiesAcquired>15327</amountOfSecuritiesAcquired>
      <paymentDate>06/01/2023</paymentDate>
      <natureOfPayment>Cash</natureOfPayment>
    </securitiesToBeSold>
    <nothingToReportFlagOnSecuritiesSoldInPast3Months>N</nothingToReportFlagOnSecuritiesSoldInPast3Months>
    <securitiesSoldInPast3Months>
      <sellerDetails>
        <name>Arve Hanstveit</name>
        <address>
          <com:street1>1717 Doolittle Drive</com:street1>
          <com:city>San Leandro</com:city>
          <com:stateOrCountry>CA</com:stateOrCountry>
          <com:zipCode>94577</com:zipCode>
        </address>
      </sellerDetails>
      <securitiesClassTitle>Common</securitiesClassTitle>
      <saleDate>04/03/2023</saleDate>
      <amountOfSecuritiesSold>16000</amountOfSecuritiesSold>
      <grossProceeds>375864.99</grossProceeds>
    </securitiesSoldInPast3Months>
    <noticeSignature>
      <noticeDate>06/01/2023</noticeDate>
      <signature>/s/ Gerardo Ibarra-Munoz, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Arve Hanstveit</signature>
    </noticeSignature>
  </formData>
</edgarSubmission>
[{"type": "144", "sequence": "1", "filename": "primary_doc.xml", "secsgml_size_bytes": 3433}]
144
0001430122
XXXXXXXX
LIVE
0001421517
Energy Recovery, Inc.
001-34112
1717 DOOLITTLE DRIVE
SAN LEANDRO
CA
94577
(510) 483-7370
Hanstveit Arve
Director
Common
Fidelity Brokerage Services LLC
900 Salem Street
Smithfield
RI
02917
15327
366091.18
56347563
06/01/2023
NASDAQ
Common
06/01/2023
Option Granted - 06/23/2016
Issuer
N
15327
06/01/2023
Cash
N
Arve Hanstveit
1717 Doolittle Drive
San Leandro
CA
94577
Common
04/03/2023
16000
375864.99
06/01/2023
/s/ Gerardo Ibarra-Munoz, as a duly authorized representative of Fidelity Brokerage Services LLC, as attorney-in-fact for Arve Hanstveit