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        <liveTestFlag>LIVE</liveTestFlag>
  
  
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      <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>Yeung William</nameOfPersonForWhoseAccountTheSecuritiesAreToBeSold>
        <relationshipsToIssuer>
          <relationshipToIssuer>Chief Legal Officer</relationshipToIssuer>
        </relationshipsToIssuer>
      </issuerInfo>
      <securitiesInformation>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <brokerOrMarketmakerDetails>
          <name>TD AMERITRADE</name>
          <address>
            <com:street1>200 S 108TH AVENUE</com:street1>
            <com:city>OMAHA</com:city>
            <com:stateOrCountry>NE</com:stateOrCountry>
            <com:zipCode>68154</com:zipCode>
          </address>
        </brokerOrMarketmakerDetails>
        <noOfUnitsSold>40614</noOfUnitsSold>
        <aggregateMarketValue>1102670.00</aggregateMarketValue>
        <noOfUnitsOutstanding>56406602</noOfUnitsOutstanding>
        <approxSaleDate>08/28/2023</approxSaleDate>
        <securitiesExchangeName>NASDAQ</securitiesExchangeName>
      </securitiesInformation>
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        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>02/05/2018</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNITS VESTING</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>ENERGY RECOVERY INC</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>1956</amountOfSecuritiesAcquired>
        <paymentDate>02/05/2018</paymentDate>
        <natureOfPayment>RSU VESTING</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>03/18/2019</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNITS VESTING</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>ENERGY RECOVERY INC</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>4590</amountOfSecuritiesAcquired>
        <paymentDate>03/18/2019</paymentDate>
        <natureOfPayment>RSU VESTING</natureOfPayment>
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      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>09/25/2019</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNITS VESTING</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>ENERGY RECOVERY INC</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>7567</amountOfSecuritiesAcquired>
        <paymentDate>09/25/2019</paymentDate>
        <natureOfPayment>RSU VESTING</natureOfPayment>
      </securitiesToBeSold>
      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>02/05/2020</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNITS VESTING</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>ENERGY RECOVERY INC</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>7356</amountOfSecuritiesAcquired>
        <paymentDate>02/05/2020</paymentDate>
        <natureOfPayment>RSU VESTING</natureOfPayment>
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      <securitiesToBeSold>
        <securitiesClassTitle>COMMON</securitiesClassTitle>
        <acquiredDate>02/03/2021</acquiredDate>
        <natureOfAcquisitionTransaction>RESTRICTED STOCK UNITS VESTING</natureOfAcquisitionTransaction>
        <nameOfPersonfromWhomAcquired>ENERGY RECOVERY INC</nameOfPersonfromWhomAcquired>
        <isGiftTransaction>N</isGiftTransaction>
        <amountOfSecuritiesAcquired>19145</amountOfSecuritiesAcquired>
        <paymentDate>02/03/2021</paymentDate>
        <natureOfPayment>RSU VESTING</natureOfPayment>
      </securitiesToBeSold>
      <nothingToReportFlagOnSecuritiesSoldInPast3Months>Y</nothingToReportFlagOnSecuritiesSoldInPast3Months>
      <noticeSignature>
        <noticeDate>08/28/2023</noticeDate>
        <signature>WILLIAM YEUNG</signature>
      </noticeSignature>
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text: 144
  0001677876
  XXXXXXXX
  LIVE
  0001421517
  Energy Recovery, Inc.
  001-34112
  1717 DOOLITTLE DRIVE
  SAN LEANDRO
  CA
  94577
  (510) 483-7370
  Yeung William
  Chief Legal Officer
  COMMON
  TD AMERITRADE
  200 S 108TH AVENUE
  OMAHA
  NE
  68154
  40614
  1102670.00
  56406602
  08/28/2023
  NASDAQ
  COMMON
  02/05/2018
  RESTRICTED STOCK UNITS VESTING
  ENERGY RECOVERY INC
  N
  1956
  02/05/2018
  RSU VESTING
  COMMON
  03/18/2019
  RESTRICTED STOCK UNITS VESTING
  ENERGY RECOVERY INC
  N
  4590
  03/18/2019
  RSU VESTING
  COMMON
  09/25/2019
  RESTRICTED STOCK UNITS VESTING
  ENERGY RECOVERY INC
  N
  7567
  09/25/2019
  RSU VESTING
  COMMON
  02/05/2020
  RESTRICTED STOCK UNITS VESTING
  ENERGY RECOVERY INC
  N
  7356
  02/05/2020
  RSU VESTING
  COMMON
  02/03/2021
  RESTRICTED STOCK UNITS VESTING
  ENERGY RECOVERY INC
  N
  19145
  02/03/2021
  RSU VESTING
  Y
  08/28/2023
  WILLIAM YEUNG