In partnership with the state Department of Commerce, we are leading a group of state agencies to identify actions to improve siting and permitting of clean energy projects in Washington. The council ...

The water year begins Oct. 1 and ends Sept. 30. Three months before the calendar year changes, hydrologists and other water scientists mark the start of the new water year. Starting the water year in ...

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, & ...

Communities throughout Washington will soon be offered grant funds to support projects that protect rivers and improve streamflows. The Washington Department of Ecology will invest up to $53.5 million ...

Arsenic and lead in soil puts people at risk, especially children. We provide free advice for developers and property owners on how to sample soil for arsenic and lead contamination and to complete ...

We post all bidding opportunities in the Washington State Business Solution (WEBS). However, the WEBS system doesn't support all the document file types and sizes related to this kind of work, so we ...

Transportation is our state’s biggest source of greenhouse gas emissions, so transitioning to clean vehicles is an essential part of addressing climate change. It also improves air quality. In ...

In early November, we will start seeking proposals for projects designed to improve and protect the overall health of Puget Sound’s riparian areas and make them more resilient to the detrimental ...

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 ...

For the 2025 legislative session, we are proposing the agency request bills below to the Governor’s Office for consideration. As a covered agency under the HEAL Act (Chapter 70A.02 RCW), we are ...

The greenhouse gas inventory is the historical record of Washington’s contribution to global climate change. It estimates statewide emissions and measures emissions reductions compared to a 1990 ...

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 ...