Reminding people about the dangers of wildfire smoke has been a key part of Moses’s outreach work. She emphasizes the health ...

Ecology's previous round of Prevent Nonattainment grants helped agencies in Okanogan County improve air quality to meet ...

Things are heating up in the PNW, and with the excitement of warm weather comes the threat of wildfires. Cities across the ...

We're looking into harmful chemicals in everyday products – like paints and nail polish – and researching safer alternatives.

For more than a year, we have been working with Tribes, local governments, state agencies, and the public to help us update ...

Discharges of excess nutrients — particularly nitrogen — to the Puget Sound from public domestic wastewater treatment plants (WWTPs) are contributing to existing low oxygen levels in the Puget Sound ...

We invite you to review and comment on documents, and attend an open house about the Rayonier Mill cleanup site on the shores ...

Businesses that generate any amount of dangerous waste are responsible for this waste from cradle to grave. In Washington, the Dangerous Waste Regulations (Chapter 173-303), which are based on the ...

"That mark that will be found by examining the bed and banks and ascertaining where the presence and action of waters are so common and usual, and so long continued in all ordinary years, as to mark ...

With expansive farmland across the state, Washington is home to one of the most productive agricultural industries in America. The industry brings vital employment and economic benefit to communities ...

The list of rules below are categorized by topical areas. These links will take you to the existing rule language on the Washington State Legislature's Code Reviser's web page.

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 ...