X0306 4 2018-04-02 0 0001604643 Evoqua Water Technologies Corp. AQUA 0001234537 WILVER PETER M EVOQUA WATER TECHNOLOGIES CORP. 210 SIXTH AVENUE PITTSBURGH PA 15222 1 0 0 0 Common Stock 2018-04-02 4 A 0 4789 0 A 4789 D The reported transaction is an award of restricted stock units in respect of the issuer's common stock. These restricted stock units will vest in full on February 28, 2019 (the "Vesting Date") and settle within 30 days of the Vesting Date, subject to the reporting person's continued service as a director of the issuer through the Vesting Date. /s/ John DiMascio, Attorney-in-Fact for Peter Wilver 2018-04-04