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.

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 ...

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 ...

Washington has almost 74,000 miles of rivers and streams statewide, more than 4,000 lakes, and almost 3,000 square miles of marine estuaries. We work with engaged citizens, businesses, tribes, and ...

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 ...

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 ...

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 ...

Local partner particulate matter grants help local clean air agencies operate their air monitoring sites that measure ultra-fine particles less than 2.5 microns in diameter (PM 2.5). These air ...

The Hazardous Waste and Toxics Reduction program enforces Washington's toxics laws, including the Dangerous Waste regulations that many businesses need to comply with. We also offer technical ...

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 ...

Using products that contain toxic chemicals can put your workers and your business's reputation at risk. Switching to safer products can reduce: Risk to your staff, customers, and the environment.

The U.S. Fish and Wildlife Service, in collaboration with Washington State University, is testing how long a bioretention soil mix can be used to reduce pollution and toxicity from urban stormwater.