Jan 30, 2026 · The Washington State Department of Ecology provides resources and information to protect and manage Washington's environment and natural resources.

We accredit environmental laboratories — including those that analyze drinking water, wastewater, surface water, groundwater, stormwater, biosolids, fish tissue, soil, sediments, and solid and …

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.

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

Jan 30, 2026 · Ecology funding is supporting efforts to reconnect Myers Creek in Okanogan County to its floodplain to restore wetlands. Communities across Washington are preparing to improve wastewater …

About us Our vision: Our partnerships protect and sustain healthy land, air, water, and climate in harmony with a strong economy. Our mission: To protect, preserve, and enhance Washington’s …

Jan 6, 2026 · As we enter 2026, let’s take a moment to check in on what a wild month of December weather has meant for snowpack, water supplies, and the potential for drought in the year ahead. …

Mar 11, 2026 · 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 …

Ecology has issued a Request for Information (RFI) to support implementation of Washington’s Recycling Reform Act. The RFI seeks technical information, datasets, and recommendations to …