A transboundary workgroup is collaborating to improve water quality in the Nooksack River watershed. Due to those efforts, ...

Conditions changed quickly at the end of August. A combination of lightning-sparked wildfires, hot and dry weather, and light ...

Ecology is working with other state and local government agencies to reduce nitrate contamination so everyone in the Lower ...

On the morning of July 18, a dual-tanker truck carrying thousands of gallons of gasoline and diesel left the roadway on U.S.

We are starting a new statewide study to evaluate potential environmental impacts surrounding the production and distribution ...

The Washington Department of Ecology has adopted changes to vehicle emission standards known as Advanced Clean Trucks and Heavy-Duty Low NOx Omnibus, which expand access to new zero-emission ...

On Aug. 28, 2025, Ecology adopted a new rule, Chapter 173-339 WAC: Cosmetic Products Restrictions. This new chapter restricts the manufacture, sale, and distribution of cosmetic products in Washington ...

The comment period closed July 3, 2025, at 11:59 p.m. Please see submitted comments here. Public hearings for this rulemaking were held on June 24, 2025, at 9 a.m. and June 25, 2025, at 5 p.m. Please ...

It is far less expensive to prevent an oil spill than it is to clean one up. No spill is acceptable — once oil is released into the environment, harmful consequences have already occurred. All oil ...

The Dungeness water management rule was adopted in late 2012 to protect flows in a critical basin for endangered fish. Elements of the Dungeness water management rule include: Setting instream flow ...

We develop and provide watershed characterization information to help inform local planning processes. This page provides links to examples of how land use planners and resource managers have used ...

We are partnering with the Office of the Insurance Commissioner, Emergency Management Division, and the Department of Natural ...