These forms are the first step in a legal process called adjudication. This process will determine who has a right to use ...

Join us virtually on March 17, 2025, to learn more about our agency’s efforts in developing a strategy to achieve healthy ...

Our aquatic plant specialist explains the differences between invasive and native milfoils, why native milfoils are important ...

The Yakima Basin has had back-to-back droughts in 2023 and 2024. Heading into irrigation season, we are getting a better idea ...

NextCycle Washington advances recycling and reuse projects for a circular economy. The third cohort of teams just started our ...

Find a moderate risk waste disposal site in your county. Accepts: Household hazardous waste. Does not accept wastes from business unless it is a scheduled small business collection event. Check with ...

A 2016 Washington State Supreme Court decision changed how counties decide to approve or deny building permits that use wells for a water source. In the Whatcom County vs. Hirst, Futurewise, et al.

Washington’s four counties bordering the Pacific Ocean — Clallam, Grays Harbor, Jefferson, and Pacific — encompass 331,000 acres of marine waters and 157 miles of open ocean coastline. Communities and ...

Accidental spills of dangerous materials and past business practices have contaminated land and water throughout Washington. The Toxics Cleanup Program (TCP) works to remedy these situations, which ...

Annual reports are due March 15, 2025. See below for more program information. Correction to email address in Chapter 173-443 WAC The email address for contacting Ecology’s Hydrofluorocarbons Team ...

Rainwater collection, including the use of rain barrels, has become more popular as a supplemental source of water. In 2009, we issued a rainwater use interpretive policy, which clarifies that you may ...