Lower wildfire activity and changing traffic patterns stemming from the COVID-19 pandemic reduced air pollution in sensitive ...

Many locals have never seen the dense Olympia area exist without Capitol Lake at its center; they don’t know that the mouth ...

Grant recipients of Ecology's landfill methane emissions reduction grant program are having success reducing methane ...

We invite you to comment on two cleanup sites in the Lower Duwamish Waterway as well as a consent decree settling who will pay for sediment cleanup in the river.

The Washington Department of Ecology issued penalties totaling over $1.1 million to Amazon Inc. and Walmart Inc. for illegally selling climate-polluting cooling and refrigeration products. These ...

For at least the past year, Seattle Barrel Company has failed to implement safe management of their dangerous waste, despite multiple attempts by staff from the Washington Department of Ecology to ...

Mountain valley in the Mount Baker wilderness. Mount Baker has been identified as having geothermal energy potential. We are leading a geothermal collaborative process to support Washington’s ...

As the state’s lead agency managing litter programs, we operate youth and adult litter pickup crews and provide funding for litter pickup and prevention to state and local governments. We also oversee ...

Ecology's air quality in overburdened communities grant program is reducing air pollution through sustainable transportation.

This rulemaking will update both chapters to consider recommendations from the 2025 Best Achievable Protection (BAP) workgroups. To learn more about this rulemaking and recommendations from the 2025 ...

We adopted changes to chapter 173-201A Water Quality Standards for Surface Waters of the State of Washington. In response to nominations we received in 2021, and after considering public comments and ...

Ecology is starting the rulemaking process to amend Chapters 173-18, -20, -22, -26, and -27 under the Shoreline Management Act. Add requirements for local governments to address the impact of sea ...