“Cosmetics that retailers and salons in Washington received in 2025 should already meet the new restrictions in the law, but older stock might not,” Franjevic said. “The close of the sell-through ...

We're updating requirements for protecting water quality when washing and maintaining bridges and ferry terminals.

Toxic algae blooms can make people, pets, and livestock sick. We offer a funding program to address problem blooms. The Freshwater Algae Program (FAP) has an annual funding cycle for projects to ...

We track ozone pollution in current air quality conditions (map). We monitor ozone at 13 locations to make sure levels are in the healthy range. Currently, all areas of Washington meet the national ...

Everyone deserves clean air to breathe and a sustainable future that responds to challenges presented by climate change. To reach these goals, we regulate harmful emissions from vehicles, burning, and ...

The Chehalis Basin Strategy is an ambitious collection of potential actions to address the challenges of extreme flooding and degraded aquatic habitat in the Chehalis River basin, the state’s ...

No person may manufacture, knowingly sell, offer for sale, or distribute a cosmetic product that contains one or more of the following 25 intentionally added formaldehyde releasers. This includes ...

We develop and administer Clean Water Act National Pollutant Discharge Elimination System (NPDES) municipal stormwater permits in Washington. The Phase I Municipal Stormwater Permit requires local ...

Governmental agencies use the SEPA environmental checklist to help determine whether a proposal will have significant adverse environmental impacts. The information helps identify what measures can be ...

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 ...

On Dec. 16, 2025, the Department of Ecology adopted a new rule, Chapter 173-905 WAC, Battery Stewardship Program. This rule guides implementation of a new law that requires battery producers to fund a ...

Invasive, non-native aquatic plants are a serious threat to the health of lakes, rivers, and streams in Washington. Excessive invasive plant growth impairs fish and wildlife habitat, and restricts ...