Ecology expands air monitoring in East and South Tacoma, and undertakes other projects to help mitigate air pollution from ...

A Bellingham-area private landfill where incinerator ash was disposed in the 1980s has met the criteria to safely discontinue ...

Research shows that some cosmetic ingredients may have a bigger impact on human health and the environment than previously ...

We joined Lummi Nation, the U.S. Environmental Protection Agency (EPA), Tribal Council members, and others to celebrate the ...

Some of the dirtiest water was recorded in the last 10 years entering the Spokane River from Hangman Creek after a large rain event in June. Practices such as no-till can help prevent sediment and ...

The Excel spreadsheets and statistical packages on this page can help you plan cleanups, calculate cleanup levels, and show that your cleanup is happening as planned. Download these Excel files to ...

In 2023, the Washington Legislature passed a law creating a product stewardship program for batteries. The law requires battery producers to create a statewide collection system for portable and ...

Passed by the Washington Legislature in 2025, the Recycling Reform Act (Chapter 70A.208 RCW) creates an extended producer responsibility (EPR) program for residential packaging and paper products. The ...

Stormwater can pick up pollution from factories and businesses. Those contaminants are carried into waterways and can harm fish and other aquatic life. The National Pollutant Discharge Elimination ...

Underground Injection Control (UIC) wells — or injection wells — are structures built to allow fluids to flow into the ground (usually) under the force of gravity. The most common in Washington are ...

Community members participate in bike-centered projects in Shoreline, Tacoma, and Wenatchee (left to right). Cycling isn’t just a great way to stay active. It also helps reduce air pollution by ...