Arsenic and lead in play-area soil can pose a risk to children. Through our Soil Safety Program, we provide free soil sampling and soil safety actions for qualifying public and private schools, ...

We prevent and clean up toxic leaks and spills across the state. We respond to spills, inspect chemical storage and transport facilities, and clean up complex contaminated sites that threaten the ...

This tool can help you locate any of these sites within Washington state either in our database, or you can search visually on our interactive mapping tool. For help understanding the codes and terms ...

Our Solid Waste Management program coordinates solid waste and recycling programs in Washington. The state is committed to reducing and recycling waste wherever possible, and safely managing what ...

We improve and protect water quality, manage and conserve water resources, and effectively manage coastal and inland shorelines to assure our state has sufficient supplies of clean water for ...

Stormwater Capacity Grants are non-competitive and awarded to Phase I and Phase II National Pollutant Discharge Elimination System (NPDES) municipal permittees for activities and equipment necessary ...

Read our blog series about lead and arsenic in former orchards. From the late 1800s to just before 1950, lead-arsenate pesticides were used in apple and pear orchards to control coddling moth ...

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 ...

Under the Eastern Washington Clean Sites Initiative we partner with communities and other partners to shape cleanup projects that improve local residents’ quality of life. Public funds are used to ...

The Municipal Water Law (MWL) was passed in 2003. Ecology and the Department of Health (DOH) have different roles and responsibilities when it comes to implementing the MWL. Department of Health ...

We are committed to providing equal opportunities, resources, and access to all Washingtonians, regardless of abilities or circumstances.

Our team of engineers, chemists, toxicologists, and environmental specialists provide non-enforcement pollution prevention (P2) technical assistance to businesses like yours. We provide services ...