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

Commercial and industrial businesses that emit large amounts of air pollution must get an air operating permit. An air operating permit is a master document that lists all of the air pollution ...

The Ecology Litter Corps (formerly Ecology Youth Corps) hires teens 14 –17 years old to serve on summer litter crews and provide an important service to their community. They gain valuable job skills, ...

The Dangerous Waste Report summarizes a business’s dangerous waste activities in Washington. All sites with an active EPA/State ID Number must submit a Dangerous Waste Report. Some businesses are ...

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 ...

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

A new rule adopted by the Washington State Board of Pilotage Commissioners, in consultation with the Washington Department of Ecology, will require tug escorts for a wider range of oil tankers as they ...

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 ...

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.

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 ...