Product stewardship, sometimes called Extended Producer Responsibility (EPR), places the focus on producers of materials that are impactful to the waste system and environment. The idea is that ...

Our freshwater monitoring program examines current water quality and streamflow conditions and studies trends in stream health over time. Healthy communities rely on rivers and streams to meet their ...

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 ...

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

We maintain the spatial datasets described here in order to better describe Washington's diverse natural and cultural environments. As a public service, we have made some of our data available for ...

Our GIS staff build and maintain spatial datasets and applications, conduct GIS projects, and publish GIS maps in support of the agency's mission of protecting the land, air, and waters of the state.

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 ...

Climate change is increasing the uncertainty of Washington’s water supplies. Recent droughts created hardships for farmers, ranchers, small communities and aquatic species. We’re working with the ...

We also provide educational resources to property owners who want to drill a new well, maintain a well, or close down (decommission) an unused well. Well drillers and property owners have the ...

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 ...

Accidental spills of dangerous materials and past business practices have contaminated land and water throughout Washington. The Toxics Cleanup Program (TCP) works to remedy these situations, which ...

The long-term sustainability of the solid waste funding system has been a concern of local governments in particular for more than two decades. We have released several reports over this time, ...