Over the course of many decades, human activities led to water polluted by fecal bacteria in the Snohomish River Basin. Today ...

Our return-on-investment research describes tangible outcomes in terms of numbers, such as jobs created, acres redeveloped, ...

Washington Department of Ecology Director Casey Sixkiller has tapped Nat Kale to serve as director for the agency’s Office of Chehalis Basin. In his role, Kale will oversee the state’s efforts to ...

Spills of oil or hazardous materials to water must be reported immediately to help reduce impacts to the environment. Failure to report a spill you're responsible for could result in penalties. Stop ...

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 ...

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 ...

In recent history, Washington has experienced three very strong El Niño events: 2016, 1998 and 1984. All three of those years ...