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 ...

The Salish Sea Model was developed by Pacific Northwest National Laboratory (PNNL) in collaboration with scientists within our Environmental Assessment Program. The model is a powerful computerized ...

We issue burn permits for agricultural, outdoor, and residential burning to protect healthy air in Washington. The type and location of burning you are planning will determine if you need a permit.

We estimate there are thousands of abandoned wells in Washington. If you find an abandoned well on your property, you are required to work with a licensed well driller to properly close it up, a ...

Washington's ocean and shorelines are integral to the regions character, quality of life, and economic viability. We work in partnership to protect and restore important habitats and ocean resources, ...

The Public Trust Doctrine is a legal principle derived from English common law. The Public Trust Doctrine protects public ownership interests in certain uses of navigable waters and underlying lands.

Excessive levels of nutrients from human sources, such as nitrogen and carbon, are negatively impacting water quality in Puget Sound. This can lead to low dissolved oxygen, which impacts the health of ...

We conduct State Environmental Policy Act (SEPA) reviews for some proposed rule amendments, programs, toxic cleanup actions, various minor projects, and a few major projects such as energy ...

If you use any products to manage aquatic plants, animals or insects in and around waters of Washington, you will probably need coverage under a National Pollution Discharge Elimination System (NPDES) ...

When food goes in the trash, so do resources, time, and money. Save on all three with small changes to your cooking and shopping habits. Get started today. Your food saving journey starts here. We’ve ...

Air quality burn bans are called by our agency, local clean air agencies, and tribes when air is unhealthy. A burn ban limits wood stove use and outdoor burning. Use the map below to find out which ...

Businesses that generate dangerous waste must manage and dispose of this waste properly. Dangerous waste generators are responsible for this waste forever — even after it is disposed of. Waste service ...