Wastewater Operator Certification Program

Wastewater treatment plants (WWTPs) serve an essential function to protect public health and the environment, including Washington's rivers, lakes, streams, and Puget Sound. The certification of wastewater treatment plant operators helps ensure they are knowledgeable and that WWTPs are properly operated and maintained.

Effective Aug. 10, 2019, changes to Operator Certification Rule

Drawing by James Davis