CONSENT OF INDEPENDENT REGISTERED PUBLIC ACCOUNTING FIRM
We consent to the incorporation by reference in this Registration Statement on Form S-8 of our reports dated March 12, 2021 relating to the consolidated financial statements of Energy Recovery, Inc. and the effectiveness of Energy Recovery, Inc.'s internal control over financial reporting, appearing in the Annual Report on Form 10-K of Energy Recovery, Inc. for the year ended December 31, 2020.
/s/ Deloitte & Touche LLP
San Francisco, California
March 31, 2021