The Lower Peshastin Creek Restoration Project cleaned up contamination, reconnected the creek to its historical channel, and ...

We are starting two rulemakings to update Washington’s water quality standards to help address freshwater nutrient pollution and the harmful, toxic algal blooms that can result from it.

This event is scheduled for two days: Dec. 9 and Dec. 10, 2025 from 12 p.m. to 4 p.m. To see the time and schedule of individual speakers, here is a detailed daily agenda. The forum will follow this ...

Starting Jan. 1, 2026, shoppers will pay 12 cents, up from 8 cents, for each reusable plastic bag purchased from Washington retailers and restaurants Beginning January 1, shoppers will see a 4-cent ...

Clean air is vital for everyone. We manage smoke, vehicle pollution, industrial emissions, and other pollutants so communities have healthy air to breathe. We do this through permits, regulations, and ...

Washington is working to reduce greenhouse gas emissions 95% by 2050. This will help protect Washington's environment and economy from the effects of climate change.

This is the list of rules we are authorized to implement. They are sorted by topic. Each rule links to official rule language on the Washington State Legislature's Code Reviser's web site. The Office ...

In 2024, litter-pickup programs we funded collected more than 5.2 million pounds (2,632 tons) of litter and cleaned more than 18,000 miles of road, statewide. See how much litter crews picked up in ...

On June 30, 2025, we released final programmatic environmental impact statements for three types of clean energy facilities in Washington -- utility-scale onshore wind, solar and green hydrogen ...