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Our scientists coordinate algae and invasive-plant monitoring in Washington lakes and monitor some each year for toxic metals and other chemicals. However, most lake water quality monitoring is ...

Our Nuclear Waste Program also oversees several other facilities in Washington that aren't part of the Hanford cleanup. Click on the tabs to find out more about the facilities, and read about the US ...

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 ...

Our team of engineers, chemists, toxicologists, and environmental specialists provide non-enforcement pollution prevention (P2) technical assistance to businesses like yours. We provide services ...

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 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 ...

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 ...

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 use Geographic Information System (GIS) tools and procedures to help accomplish our mission to protect the land, air, and water of the state. This technology is widely used in support of the agency ...

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 ...