Our most frequently requested information: ...

Casey Sixkiller was appointed by Governor Bob Ferguson as the 14th Director of the Washington State Department of Ecology. With more than two decades of experience in federal, Tribal, regional, and ...

We maintain the spatial datasets described here in order to better describe Washington's diverse natural and cultural environments. As a public service, we have made some of our data available for ...

Our accreditation team helps large and small laboratories to become successful environmental laboratories doing work in and/or for Washington state. Accreditation ensures that laboratories can ...

Are you buying, selling, or working as a real estate professional within the Tacoma smelter plume? Most properties are in areas where arsenic and lead pose only a very small, long-term health risk.

Find a moderate risk waste disposal site in your county. Accepts: Household hazardous waste. Does not accept wastes from business unless it is a scheduled small business collection event. Check with ...

Your input is valuable to our decision-making process. We post water right documents for notice or comment. Documents posted for comment have a link to our online comment form. Other documents are ...

Everyone deserves clean air to breathe and a sustainable future that responds to challenges presented by climate change. To reach these goals, we regulate harmful emissions from vehicles, burning, and ...

We conduct projects that use Geographic Information System (GIS) produced maps as aids in accomplishing our mission. We build and maintain GIS maps to help our staff and the public understand the ...

Will Ecology adopt the universal waste aerosol cans rule? At this time, we have not adopted the Environmental Protection Agency’s (EPA) rules for universal waste aerosol cans. Businesses must continue ...

Our mission is to keep Washington waters clean. Use this site to find out if a lake, stream, or marine beach near you is healthy or polluted. Learn about water cleanup plans and how we’re addressing ...