If a business emits air pollution, it is probably regulated by Ecology or a local clean air agency. This may require registering every year. A business must pay a yearly fee based on the amount of air ...

Stormwater Capacity Grants are non-competitive and awarded to Phase I and Phase II National Pollutant Discharge Elimination System (NPDES) municipal permittees for activities and equipment necessary ...

Our agency is dedicated to preserving and protecting the environment in Washington. To learn how we preserve and protect Washington's land, air, and water for today and for future generations, read ...

We prevent and clean up toxic leaks and spills across the state. We respond to spills, inspect chemical storage and transport facilities, and clean up complex contaminated sites that threaten the ...

Our Shoreline Master Programs Handbook provides background about the state Shoreline Management Act and explains state requirements under our Shoreline Master Program Guidelines. The Handbook provides ...

Our Solid Waste Management program coordinates solid waste and recycling programs in Washington. The state is committed to reducing and recycling waste wherever possible, and safely managing what ...

The Municipal Water Law (MWL) was passed in 2003. Ecology and the Department of Health (DOH) have different roles and responsibilities when it comes to implementing the MWL. Department of Health ...

Supporting supply chain transparency. Identifying toxic chemicals for replacement. Switching to less toxic chemicals. Certifying their products. Learn how manufacturers can assess their current ...

Discharge standards can vary, but most of Washington's wastewater treatment plants (WWTPs) must meet technology-based effluent limits. See full standards and alternative discharge limit details in ...

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 ...

Our long-term river and stream monitoring team collects long-term data to track trends in stream health and contribute to watershed studies and water quality improvement plans. Our water quality ...

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.