Who we are Find everything you need to know about Ecology — what we do, why we do it, and the latest news. Meet our director Our strategic plan News Our programs Environmental justice Our …

Nov 20, 2025 · Ecology's work near you Environmental review (SEPA) Laws, rules, & rulemaking Publications & forms Budget & legislative Contracts & bids Grants & loans Online tools I want to...

4 days ago · We had decent snowpack numbers, but it melted out quickly, forcing Ecology to broaden our drought declaration to cover those regions beginning in June. This is becoming the new normal …

Planning to visit one of our offices? If you would like to meet with a staff member in person, please call ahead to confirm that they will be available. Our office hours are Monday to Friday, 8 a.m. – 5 p.m. If …

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 …

Each year, all facilities will report to Ecology on the quantity, quality, and end markets of the material processed. End markets must manage recyclables appropriately, without creating unnecessary …

5 days ago · A new report from the Washington Department of Ecology shows that the state’s Clean Fuel Standard eliminated an estimated 2 million tons of greenhouse gases in 2023 for less than 1 …

Most of Ecology's publications are available online as PDF or Word files. We encourage you to be sustainable by viewing our publications online and only printing them when necessary.

Air & Climate Everyone deserves clean air to breathe and a sustainable future that responds to challenges presented by climate change. To reach these goals, we regulate harmful emissions from …

Ecology's Stormwater Management Manuals (SWMMs) The dropdowns below provide access to past and present SWMMs.