Changing climate conditions have increased the threat of flood damage and impacts to aquatic species in the Chehalis Basin watershed. We are working to provide adaptability and resiliency for both ...

The Municipal Water Law (MWL) was passed in 2003. Ecology and the Department of Health (DOH) have different roles and responsibilities when it comes to implementing the MWL. Department of Health ...

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 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 ...

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 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 ...

Clean air is vital for everyone. We manage smoke, vehicle pollution, industrial emissions, and other pollutants so communities have healthy air to breathe. We do this through permits, regulations, and ...

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.

Arsenic and lead in play-area soil can pose a risk to children. Through our Soil Safety Program, we provide free soil sampling and soil safety actions for qualifying public and private schools, ...

Stormwater washes pollutants into aquatic ecosystems degrading water quality, impacting aquatic life, and threatening human health. In 1987, the U.S. Congress established the National Estuary Program ...

The Water Right Application Portal is here! We created a user-friendly application portal to fill out, pay, sign, and submit your application for a new water right online. Learn more on our recent ...

Depending on where you live, you may be able to get free soil sampling. We also have information about how to sample your own soils. Visit our interactive map of the Tacoma Smelter Plume. Search for ...