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 ...

This request form is for inviting Ecology's director to speak at your meeting or event. Thank you for your interest in Director Casey Sixkiller. Though Casey would like to accept all invitations, it’s ...

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, ...

The former Asarco smelter site, also known as the Tacoma smelter, was one of the first Superfund sites in the nation. Under EPA's oversight, Asarco sampled soil at 3,570 properties in Ruston and North ...

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 ...

Follow us on social media to learn more about our work to protect, preserve, and enhance Washington's environment.

The Anderson Landfill, owned by DTG Recycle, is located at 41 Rocky Top Road in Yakima. At Ecology, our job is to protect clean air, drinkable water, and healthy places to live. To meet those goals, ...

The Lower White River is home to Endangered Species Act-protected salmon, a critical food source for southern resident orcas. The Washington Department of Ecology recently received approval from the U ...

Use this portal to filter and search for all of our scientific information. Ecology provides the high-quality science that is the foundation of Washington state environmental policy. Our monitoring, ...

Use this portal to filter and search for all of our regulatory information. We oversee many state and federal laws designed to protect Washington's land, air, and water. See our laws, rules, & ...

New house being built on land in Chelan County that was previously an apple orchard. Central Washington is at the heart of the state’s thriving agricultural production and is home to a rapidly growing ...