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 make sure they are knowledgeable, and that WWTPs are properly operated and maintained.

Wastewater Operator Certification Program Fees 

We are required to fund the Wastewater Operator Certification (OpCert) Program with fees (WAC 173-230-240). We review and evaluate these fees every two years, then propose changes, if needed, based on our budget and workload analysis. After our analysis, we ask for feeback on the proposed fees and respond to comments before finalizing the fees before the next fiscal year which starts July 1. 

Current Fee Schedule 

Category Fiscal Year 2025
July 1, 2024 – June 30, 2025
Group I and Group I OIT Applications $75

Groups II - IV and
Groups II - IV OIT
Applications

$125
Renewals

$200

Proposed Fee Schedule for Fiscal Years 2026 and 2027

We are not proposing any changes to the operator certification fees for the next two years. This is based on the estimated administrative costs of the OpCert program and the projected account balance.

Category

Fiscal Year 2026
July 1, 2025 – June 30, 2026

Fiscal Year 2027
July 1, 2026 – June 30, 2027

Group I and Group I OIT Applications $75 $75
Groups II - IV and Groups II - IV OIT Applications $125 $125
Renewals $200 $200

We want your feedback

Even though we are not changing the fees, we are still accepting comments on the draft fee schedule. We are accepting comments on the draft fees from midnight on March 26, 2025 to 11:59 p.m. on May 10, 2025. Written comments by mail must be postmarked by May 10, 2025.

You can submit written comment in the following ways:

Next steps

After the comment period closes we will review and respond to all comments. We plan to publish a final fee schedule prior to June 30, 2025.

Wastewater Operator Professional growth cycle and renewals

Operators commonly meet their professional growth by earning 3.0 continuing education units (CEUs) each professional growth cycle. Operators earn these CEUs by attending approved training courses. Operators must document their CEUs and submit it to the OpCert Program as they receive it. This ensures that they stay current on their requirements. Operators must meet their professional growth for the current cycle before renewing for 2025.

Drawing by James Davis

Wastewater Treatment Plant Awards

Plants are evaluated on individual permit conditions such as regularly meeting numeric effluent limits, for conducting monitoring, and for reporting data as required. We recognize these facilities through our award program. Many operators proudly display their award plaques to demonstrate their excellence and continued commitment to keeping Washington's lakes, rivers, and streams clean.