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

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.

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 …

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 …

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 …

Executive Summary RCW 70A.45.0402 requires the Washington State Department of Ecology, in collaboration with University of Washington’s Climate Impacts Group, to analyze “each successive …

2 days ago · Ecology grants and strong partnerships drive innovative methane reduction at landfills Grant recipients of Ecology's landfill methane emissions reduction grant program are having success …

Created in 2019 under Chapter 70A.240 RCW, the Recycling Market Development Center (RMDC) strengthens Washington’s recycling system by growing and supporting domestic markets for …

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, and …