-----BEGIN PRIVACY-ENHANCED MESSAGE-----
Proc-Type: 2001,MIC-CLEAR
Originator-Name: webmaster@www.sec.gov
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 TWSM7vrzLADbmYQaionwg5sDW3P6oaM5D3tdezXMm7z1T+B+twIDAQAB
MIC-Info: RSA-MD5,RSA,
 JcfvqIBWvY2jFPaUsHYx1hCne06kKXJUx89+7f7PiIXsqTKja7EW4F0Vo7oIrCOJ
 7S40dFfq5NwlgLRNzCySdQ==

<SEC-DOCUMENT>0001437749-09-000608.txt : 20090529
<SEC-HEADER>0001437749-09-000608.hdr.sgml : 20090529
<ACCEPTANCE-DATETIME>20090529193908
ACCESSION NUMBER:		0001437749-09-000608
CONFORMED SUBMISSION TYPE:	4
PUBLIC DOCUMENT COUNT:		1
CONFORMED PERIOD OF REPORT:	20090527
FILED AS OF DATE:		20090529
DATE AS OF CHANGE:		20090529

REPORTING-OWNER:	

	OWNER DATA:	
		COMPANY CONFORMED NAME:			Stover Richard
		CENTRAL INDEX KEY:			0001429462

	FILING VALUES:
		FORM TYPE:		4
		SEC ACT:		1934 Act
		SEC FILE NUMBER:	001-34112
		FILM NUMBER:		09863223

	MAIL ADDRESS:	
		STREET 1:		C/O ENERGY RECOVERY, INC.
		STREET 2:		1908 DOOLITTLE DRIVE
		CITY:			SAN LEANDRO
		STATE:			CA
		ZIP:			94577

ISSUER:		

	COMPANY DATA:	
		COMPANY CONFORMED NAME:			Energy Recovery, Inc.
		CENTRAL INDEX KEY:			0001421517
		STANDARD INDUSTRIAL CLASSIFICATION:	SPECIAL INDUSTRY MACHINERY, NEC [3559]
		IRS NUMBER:				010616867
		STATE OF INCORPORATION:			DE
		FISCAL YEAR END:			1231

	BUSINESS ADDRESS:	
		STREET 1:		1908 DOOLITTLE DRIVE
		CITY:			SAN LEANDRO
		STATE:			CA
		ZIP:			94577
		BUSINESS PHONE:		(510) 483-7370

	MAIL ADDRESS:	
		STREET 1:		1908 DOOLITTLE DRIVE
		CITY:			SAN LEANDRO
		STATE:			CA
		ZIP:			94577
</SEC-HEADER>
<DOCUMENT>
<TYPE>4
<SEQUENCE>1
<FILENAME>rdgdoc.xml
<DESCRIPTION>PRIMARY DOCUMENT
<TEXT>
<XML>
<?xml version="1.0"?>
<ownershipDocument>

    <schemaVersion>X0303</schemaVersion>

    <documentType>4</documentType>

    <periodOfReport>2009-05-27</periodOfReport>

    <issuer>
        <issuerCik>0001421517</issuerCik>
        <issuerName>Energy Recovery, Inc.</issuerName>
        <issuerTradingSymbol>ERII</issuerTradingSymbol>
    </issuer>

    <reportingOwner>
        <reportingOwnerId>
            <rptOwnerCik>0001429462</rptOwnerCik>
            <rptOwnerName>Stover Richard</rptOwnerName>
        </reportingOwnerId>
        <reportingOwnerAddress>
            <rptOwnerStreet1>C/O ENERGY RECOVERY, INC.</rptOwnerStreet1>
            <rptOwnerStreet2>1908 DOOLITTLE DRIVE</rptOwnerStreet2>
            <rptOwnerCity>SAN LEANDRO</rptOwnerCity>
            <rptOwnerState>CA</rptOwnerState>
            <rptOwnerZipCode>94577</rptOwnerZipCode>
            <rptOwnerStateDescription></rptOwnerStateDescription>
        </reportingOwnerAddress>
        <reportingOwnerRelationship>
            <isOfficer>1</isOfficer>
            <officerTitle>CTO</officerTitle>
        </reportingOwnerRelationship>
    </reportingOwner>

    <nonDerivativeTable>
        <nonDerivativeTransaction>
            <securityTitle>
                <value>Common Stock</value>
            </securityTitle>
            <transactionDate>
                <value>2009-05-27</value>
            </transactionDate>
            <transactionCoding>
                <transactionFormType>4</transactionFormType>
                <transactionCode>S</transactionCode>
                <equitySwapInvolved>0</equitySwapInvolved>
            </transactionCoding>
            <transactionAmounts>
                <transactionShares>
                    <value>40200.0000</value>
                </transactionShares>
                <transactionPricePerShare>
                    <value>8.0734</value>
                    <footnoteId id="F1"/>
                </transactionPricePerShare>
                <transactionAcquiredDisposedCode>
                    <value>D</value>
                </transactionAcquiredDisposedCode>
            </transactionAmounts>
            <postTransactionAmounts>
                <sharesOwnedFollowingTransaction>
                    <value>120330.0000</value>
                </sharesOwnedFollowingTransaction>
            </postTransactionAmounts>
            <ownershipNature>
                <directOrIndirectOwnership>
                    <value>D</value>
                </directOrIndirectOwnership>
            </ownershipNature>
        </nonDerivativeTransaction>
    </nonDerivativeTable>

    <footnotes>
        <footnote id="F1">This figure is the weighted average sales price of multiple trades ranging from $7.98 to $8.29 per share. The reporting person undertakes to provide to the SEC Staff, ERI, or a shareholder of ERI full information about the number of shares sold at each separate price upon request.</footnote>
    </footnotes>

    <ownerSignature>
        <signatureName>/s/Carolyn Bostick, attorney-in-fact for Richard Stover</signatureName>
        <signatureDate>2009-05-29</signatureDate>
    </ownerSignature>
</ownershipDocument>
</XML>
</TEXT>
</DOCUMENT>
</SEC-DOCUMENT>
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