In 2020, the Legislature and Governor updated the State Agency Climate Leadership Act codified in Chapter 70A.45 RCW. The Act directs state agencies, including universities, colleges, and community ...

Our most frequently requested information: ...

We have new requirements under the federal Energy Policy Act to develop an underground storage tank (UST) operator training program. We revised the state’s UST rule (Chapter 173-360A WAC) to include ...

Nonpoint water pollution is a leading threat to the health of rivers, lakes, wetlands, and marine water across the state. But what is nonpoint pollution? Nonpoint source pollution refers to the kind ...

These links will automatically download a ZIP file. Contact us to receive files in another format.

The Rayonier Mill property covers about 70 acres of land on the shore of the Strait of Juan de Fuca. Ennis Creek runs from the foothills of the Olympic Mountains, through the site, and into Port ...

We update the surface water quality standards to incorporate the latest science and to meet our priorities and commitments regarding the standards. We use the rulemaking process to meet our priorities ...