Ownership Submission
FORM 3
 UNITED STATES SECURITIES AND EXCHANGE COMMISSION
Washington, D.C. 20549

INITIAL STATEMENT OF BENEFICIAL OWNERSHIP OF SECURITIES

Filed pursuant to Section 16(a) of the Securities Exchange Act of 1934, Section 17(a) of the Public Utility Holding Company Act of 1935 or Section 30(h) of the Investment Company Act of 1940
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(Print or Type Responses)
1. Name and Address of Reporting Person *
  Audrey Bold
 2. Date of Event Requiring Statement (Month/Day/Year)
02/26/2013		 3. Issuer Name and Ticker or Trading Symbol
Energy Recovery, Inc. [ERII]
(Last)
(First)
(Middle)
C/O ENERGY RECOVERY, 1717 DOOLITTLE DRIVE		 4. Relationship of Reporting Person(s) to Issuer
(Check all applicable)
_____ Director _____ 10% Owner
__X__ Officer (give title below) _____ Other (specify below)
Chief Marketing Officer
 5. If Amendment, Date Original Filed(Month/Day/Year)
(Street)

SAN LEANDRO, CA 94577		 6. Individual or Joint/Group Filing(Check Applicable Line)
_X_ Form filed by One Reporting Person
___ Form filed by More than One Reporting Person
(City)
(State)
(Zip)
Table I - Non-Derivative Securities Beneficially Owned
1.Title of Security
(Instr. 4)		 2. Amount of Securities Beneficially Owned
(Instr. 4)		 3. Ownership Form: Direct (D) or Indirect (I)
(Instr. 5)		 4. Nature of Indirect Beneficial Ownership
(Instr. 5)

Reminder: Report on a separate line for each class of securities beneficially owned directly or indirectly. SEC 1473 (7-02)
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Table II - Derivative Securities Beneficially Owned (e.g., puts, calls, warrants, options, convertible securities)
1. Title of Derivative Security
(Instr. 4)		 2. Date Exercisable and Expiration Date
(Month/Day/Year)		 3. Title and Amount of Securities Underlying Derivative Security
(Instr. 4)		 4. Conversion or Exercise Price of Derivative Security 5. Ownership Form of Derivative Security: Direct (D) or Indirect (I)
(Instr. 5)		 6. Nature of Indirect Beneficial Ownership
(Instr. 5)
Date Exercisable Expiration Date Title Amount or Number of Shares
Employee Stock Option (Right to Buy)   (1) 12/15/2015 Common Stock 625 $ 1 D  
Employee Stock Option (Right to Buy)   (2) 06/28/2017 Common Stock 30,000 $ 5 D  
Employee Stock Option (Right to Buy)   (3) 09/03/2018 Common Stock 16,187 $ 9.22 D  
Employee Stock Option (Right to Buy)   (4) 09/04/2019 Common Stock 6,000 $ 5.25 D  
Employee Stock Option (Right to Buy)   (5) 02/16/2022 Common Stock 13,274 $ 2.46 D  
Employee Stock Option (Right to Buy)   (6) 12/12/2022 Common Stock 44,360 $ 3.28 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Audrey Bold
C/O ENERGY RECOVERY
1717 DOOLITTLE DRIVE
SAN LEANDRO, CA 94577		       Chief Marketing Officer  

Signatures

/s/ Lemyrtle E. Thompson, Attorney-in-fact for Audrey Bold 03/08/2013
**Signature of Reporting Person Date

Explanation of Responses:

* If the form is filed by more than one reporting person, see Instruction 5(b)(v).
** Intentional misstatements or omissions of facts constitute Federal Criminal Violations. See 18 U.S.C. 1001 and 15 U.S.C. 78ff(a).
(1) Shares were fully vested and exercisable as of 12/15/2009;
(2) Shares were fully vested and exercisable as of 06/28/2011;
(3) Share were fully vested and exercisable as of 07/01/2012;
(4) 25% of the shares fully vest on the 1st anniversary of vesting start date of 09/04/2009; Thereafter shares vest 1/48th per month.
(5) 25% of the shares full vest on the 1st anniversary of vesting start date of 02/16/2012; Thereafter shares vest 1/48th per month.
(6) 25% of the shares fully vest on the 1st anniversary of vesting start date of 11/01/2012; Thereafter shares vest 1/48th per month.

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