Exhibit 23.1
 
 
CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
 

We hereby consent to the incorporation by reference in the Registration Statement on Form S-8 (No. 333-152142) of Energy Recovery, Inc., of our report dated February 10, 2010, relating to the financial statements of Pump Engineering, LLC, which appears in this Current Report on Form 8-K/A of Energy Recovery, Inc.
 

 Gilmore, Jasion & Mahler LTD
    
/s/ Gilmore, Jasion & Mahler LTD
    
     
Maumee, Ohio
    
March 3, 2010