X0306 4 2021-02-16 0 0001604643 Evoqua Water Technologies Corp. AQUA 0001217372 CAPPELINE GARY A EVOQUA WATER TECHNOLOGIES CORP. 210 SIXTH AVENUE PITTSBURGH PA 15222 1 0 0 0 Common Stock 2021-02-16 4 A 0 4039 0 A 8266 D Common Stock 7893 I By Trust The reported transaction is an award of restricted stock units in respect of the issuer's common stock. Subject to the reporting person's continued service as a director of the issuer through the vesting date, these restricted stock units are scheduled to vest on February 16, 2022 and settle within 30 days thereafter. Shares held by the Gary Cappeline and Vicky Hu Joint Revocable Trust U/A dated 11/12/2018, of which Mr. Cappeline and Ms. Hu are the trustees and beneficiaries. /s/ John DiMascio, Attorney-in-Fact for Gary A. Cappeline 2021-02-18