We prevent and clean up toxic leaks and spills across the state. We respond to spills, inspect chemical storage and transport facilities, and clean up complex contaminated sites that threaten the ...

We are committed to providing equal opportunities, resources, and access to all Washingtonians, regardless of abilities or circumstances.

We develop training to build skills and best practices to support local shoreline planners, wetland specialists, habitat biologists, and other resource managers. This training helps educate those who ...

The Soos Creek watershed is located in South King County, in the Seattle metropolitan area. The watershed includes several urbanized, fast-growing communities, including Covington, portions of Kent, ...

The Legislature directed us to update of the strategy under the Integrated Climate Change Response Strategy (Chapter 70A.05 RCW) in partnership with nine other state agencies. The strategy addresses ...

Washington has almost 74,000 miles of rivers and streams statewide, more than 4,000 lakes, and almost 3,000 square miles of marine estuaries. We work with engaged citizens, businesses, tribes, and ...

The following links provide information about important SEPA subjects. This information is presented to help agencies, applicants, and the public fully understand and participate in procedural ...

Our agency is dedicated to preserving and protecting the environment in Washington. To learn how we preserve and protect Washington's land, air, and water for today and for future generations, read ...

We work to safely manage solid, hazardous, and nuclear waste and reduce toxic chemicals in the products you use. We regulate the threats found in everyday household products and help businesses ...

From 1945 until 1987, the U.S. had an insatiable need for plutonium to fuel the country's nuclear arsenal. In the quest to maintain nuclear superiority during the Cold War, the federal government ...

We improve and protect water quality, manage and conserve water resources, and effectively manage coastal and inland shorelines to assure our state has sufficient supplies of clean water for ...