For a limited time, we’re offering a program to help you obtain senior mitigation water to offset your use and reduce the ...

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 ...

The Water Quality Combined Funding Program funds projects that improve and protect water quality throughout Washington. The program combines grants and loans from state and federal funding sources.

Ecology is proposing revisions to chapter 173-423 WAC, Washington’s Clean Vehicles Program rule. These revisions align with California’s changes to vehicle emissions standards that apply to new ...

National Pollutant Discharge Elimination System (NPDES) permits cover discharge to surface waterbodies like rivers, lakes, or the Puget Sound. State Waste Discharge Permits (SWD) cover discharge to ...