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 *
  Bensalah Nocair
 2. Date of Event Requiring Statement (Month/Day/Year)
03/06/2012		 3. Issuer Name and Ticker or Trading Symbol
Energy Recovery, Inc. [ERII]
(Last)
(First)
(Middle)
C/O ENERGY RECOVERY, INC., 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)
VP of Manufacturing
 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) 01/04/2022 Common Stock 39,695 $ 2.59 D  
Employee Stock Option (Right to Buy)   (2) 02/15/2022 Common Stock 33,186 $ 2.46 D  

Reporting Owners

Reporting Owner Name / Address Relationships
Director 10% Owner Officer Other
Bensalah Nocair
C/O ENERGY RECOVERY, INC.
1717 DOOLITTLE DRIVE
SAN LEANDRO, CA 94577		       VP of Manufacturing  

Signatures

/s/ Denise Winn, attorney-in-fact for Nocair Bensalah 03/14/2012
**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) 25% one year cliff vest on 1st anniversary of vest start date of January 1, 2012; 1/48th monthly thereafter
(2) vests 1/36th monthly beginning in the month following the 1st anniversary of the vesting start date of February 16, 2012. The option also includes 11,062 shares not listed in this table that will vest on the first anniversary of the grant date only if the company meets an internal budget performance goal; that performance vesting will be reported on Form 4 if it occurs.

Note: File three copies of this Form, one of which must be manually signed. If space is insufficient, See Instruction 6 for procedure.

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