Fire danger is high in many areas because of hot, dry weather. Much of the state is still in a drought. Burn bans are in place across Washington. Check with your local fire district before lighting ...

Register for each webinar to get your meeting ID and passcode. To hear the webinar better or to call in only, use your phone (instead of the computer) to call 253‑215‑8782. Improve clarity and ...

At Ecology, every day is Earth Day. Our mission is to protect, preserve, and enhance the environment for today and for future generations. Our staff work across the state to accomplish this mission, ...

Discharges of excess nutrients — particularly nitrogen — to the Puget Sound from public domestic wastewater treatment plants (WWTPs) are contributing to low oxygen levels in the Puget Sound and the ...

Information for residents of Washington, to help you better understand the work Ecology does, find what's happening near you, and see what you can to do to help protect our environment!

Stormwater can pick up pollution from factories and businesses. Those contaminants are carried into waterways and harm fish and other aquatic life. The National Pollutant Discharge Elimination System ...

You can help protect the environment by telling us if you see a problem that is causing pollution. We respond to issues that pollute and damage land, air, and water. The sooner we know, the sooner we ...

We propose updates to the human health criteria in Table 240 of WAC 173-201A-240, Toxic substances, to: Replace 143 state-adopted human health criteria for 73 pollutants that the Environmental ...

The Washington Public Records Act, Chapter 42.56 RCW, requires us to promptly make identifiable public records available for inspection and provide records upon request. We adopted rules, Chapter ...

Use this portal to filter and search for all of our regulatory information. We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & ...

On May 13, 2024, Ecology adopted a new rule: Chapter 173-408 WAC, Landfill Methane Emissions. The purpose of this rulemaking is to implement Chapter 70A.540 RCW, Landfills – Methane Emissions. This ...

Ecology began a centrally coordinated unmanned aerial systems (UAS), or drone program, in early 2022 to provide guidance and oversight for diverse data collection needs. The program supports ...