Puget Sound is critical to our environment, culture, and economy. About two-thirds of the state’s population lives in the Puget Sound region. Our nation’s second largest marine estuary faces a number ...

This legal designation establishes the boundaries for a future groundwater co-management agreement in the Pasco Basin between state and federal water managers. In July 2022, we set in motion a new ...

Much of the pollution that enters the environment comes from the small but steady release of toxic chemicals contained in everyday products, such as brakes on cars, flame retardants in furniture, ...

The Action Agenda for Puget Sound sets cleanup priorities for contaminated sites at priority bays and any location within a half mile of Puget Sound. We're overseeing — and, in many cases, helping to ...

There are many freshwater streams and creeks that drain into South Skagit Bay, where shellfish farming takes place. Since 2017, Ecology has worked to discover where and why some of these creeks are ...

Padilla Bay and its freshwater tributaries have high levels of fecal coliform bacteria. For this reason, the four major sloughs that drain into Padilla Bay are listed on the Washington state list of ...

To help address the public health dangers posed by worsening wildfire seasons, EPA recently held a competition to encourage the development of new, affordable air filters. The competition aimed to ...

Thanks to improved pollution controls on industrial facilities and cleaner transportation fuels, Washington's SO 2 levels have declined dramatically in recent decades. Trees and plants can be harmed ...

We offer some flexible options to submit data, apply for permits, or file reports. For instance, contractors can apply online for a construction stormwater permit, or a plant operator can file ...

We have collected U.S. Environmental Protection Agency regulatory guidance on the following common moderate risk waste topics: ...

Under the State Environmental Policy Act (SEPA), project proposals are reviewed by a designated “lead agency.” While this is typically a city or county government, other entities such as ports, ...

We work in partnership with the U.S. Army Corps of Engineers to certify and regulate wetland mitigation banks in Washington. Find bank-specific information in the interactive map or the "Approved ...