We monitor air quality, especially for criteria air pollutants in areas at risk of nonattainment. Nonattainment is a technical term that means an area has too much of a specific air pollutant and does ...

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

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 ...

Changing or transferring an existing water right can involve changing the period of use, the place of use, the point of diversion or withdrawal, or the purpose or manner of use. Changing ownership of ...

Our Solid Waste Management program coordinates solid waste and recycling programs in Washington. The state is committed to reducing and recycling waste wherever possible, and safely managing what ...

Our Environmental Assessment Program's mission is to measure, assess, and communicate environmental conditions in Washington. We work to improve the environment for current and future generations ...

NOAA’s Office for Coastal Management conducts periodic performance evaluations of Washington's Coastal Zone Management Program. This federal evaluation assesses: The operation and management of our ...

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, ...

We recently updated our website to a new platform and not all of our historical documents are available online yet. We know that you reference these documents and we are working to make them available ...

Arsenic and lead in soil puts people at risk, especially children. We provide free advice for developers and property owners on how to sample soil for arsenic and lead contamination and to complete ...

Together with the Washington Department of Health, we regulate municipal water suppliers. As the state's water rights manager, we oversee municipalities' water rights, how much water they have, and ...