Nov 18, 2025 · We're proud to protect, preserve, & enhance Washington's environment for current and future generations. Learn more about us

Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, assessment, and modeling services provide a data-rich understanding of our …

Sep 5, 2025 · Ecology issued an official rebuke of a federal report being used to justify the rollback of climate regulations and released a new scientific analysis of local climate impacts.

Apr 8, 2026 · Ecology has declared a statewide drought emergency due to exceptionally low snowpack and projected water shortages.

Nov 20, 2025 · Ecology releases revised draft study looking at potential environmental impacts of proposed Chehalis River flood control project..

Ecology is seeking input on how a recycling refunds program, also known as a bottle bill, could work best for communities across the state of Washington. This short survey asks about recycling habits, …

The Department of Ecology is committed to providing people with disabilities access to information and services by meeting or exceeding the requirements of the Americans with Disabilities Act (ADA), …

Oct 30, 2025 · The Washington Department of Ecology’s orders halting water use in the Yakima Basin end on Oct. 31. Cities, towns, and other surface water right holders with a year-round authorization …

Oct 1, 2025 · In the Yakima Basin, a third consecutive year of drought has caused historically low reservoir storage and streamflows. To address those conditions, the Washington Department of …

We're working to improve air quality in 16 Washington communities and participating Tribes that are historically overburdened with health, social, and environmental inequities and are highly impacted …