agr.wa.gov

Air Quality

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 State Department of Ecology

Regulatory deadline approaches for Washington salons and retailers

“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 ...
agr.wa.gov

Revised draft environmental review of proposed Chehalis River Basin Flood Damage Reduction Project

To reduce the severity and duration of major and catastrophic floods that occur in the Chehalis River basin in southwest Washington, the Chehalis River Basin Flood Control Zone District (Flood ...
Washington State Department of Ecology

Bridges over clean water: updating Ecology’s permit for bridge maintenance

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

Air operating permit for large sources of air pollution

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 ...
agr.wa.gov

New report details $1.5 billion in Climate Commitment Act investments

A new report from the Washington Department of Ecology details how $1.5 billion of Climate Commitment Act (CCA) revenue was invested in local communities during the 2023-25 biennium - the most ...
agr.wa.gov

Ecology Litter Corps

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, ...
agr.wa.gov

Dangerous waste reporting requirements

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 ...
agr.wa.gov

Pipeline fined $3.8 million for 2023 gasoline spill near Conway

This enforcement action follows the conclusion of Ecology’s investigation of the 2023 Conway spill. For questions about the ongoing response for a leak on the Olympic Pipeline that began Nov. 11, 2025 ...
agr.wa.gov

Rulemaking at Ecology

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 ...
agr.wa.gov

Reducing Greenhouse Gas Emissions

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.
agr.wa.gov

Chapter 173-408 WAC – Landfill Methane Emissions

On May 13, 2024, Ecology adopted a new rule: Chapter 173-408 WAC, Landfill Methane Emissions. The purpose of this rulemaking is to implement Chapter 70A.540 RCW, Landfills – Methane Emissions. This ...