Puget Sound is critical to our environment, culture, and economy. About two-thirds of the state’s population lives in the Puget Sound region. Our nation’s second largest marine estuary faces a number ...

This legal designation establishes the boundaries for a future groundwater co-management agreement in the Pasco Basin between state and federal water managers. In July 2022, we set in motion a new ...

Complying with the Clean Fuel Standard (CFS) includes registering with Ecology, reporting fuel sales, paying an annual fee, and purchasing credits if you’re a deficit holder. Under the CFS, ...

The easiest way to avoid food waste is to not overbuy. Proper storage of what you do purchase is another way to prevent food waste. Home composting is an excellent option for what can't be used or ...

We propose updates to the human health criteria in Table 240 of WAC 173-201A-240, Toxic substances, to: Replace 143 state-adopted human health criteria for 73 pollutants that the Environmental ...

Phases out the use of copper in vehicle brakes and requires manufacturers to certify that brakes comply with the law. Regulates lead, cadmium, phthalates, and other chemicals in children's products.

This plan was adopted by the Washington State Department of Ecology following the Open Data Policy established by the Office of the Chief Information Officer (OCIO). Measure: Number of times ...

Ecology, local clean air agencies, and Tribes can restrict indoor and outdoor burning under certain conditions. Fire safety burn bans protect people and property when wildfire danger is high. Air ...

We work to safely manage solid, hazardous, and nuclear waste and reduce toxic chemicals in the products you use. We regulate the threats found in everyday household products and help businesses ...

Ecology is starting a rulemaking for a new rule, Chapter 173-135 WAC for managing the Pasco Basin groundwater subarea, and repealing the existing interim management rule, Chapter 508-14 WAC. This new ...

The Washington state well report (log) viewer, our most popular online resource, allows you to search for and view detailed records of the construction and subsurface characteristics of individual ...

Casey Sixkiller was appointed by Governor Bob Ferguson as the 14th Director of the Washington State Department of Ecology. With more than two decades of experience in federal, Tribal, regional, and ...