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Let’s be clear. Ocean acidification is real. Determining the causes, impacts, and identifying potential solutions are high priorities for our agency and the state.

This new page aims to provide information about when you can use the water after aquatic herbicide treatment in a user friendly, non-technical way, and provide a consistent message from Ecology.

We stopped using polychlorinated biphenyls (PCBs) 35 years ago, yet it continues to contaminate almost every water body in Washington.

We've asked the EPA to make the Puget Sound off limits to discharging sewage from vessels.  

Two new reports evaluate the influence of people, climate, and the Pacific Ocean on oxygen levels in South and Central Puget Sound, as well as the larger Salish Sea.

This is a story about a gracious landowner who was willing to work with us so we could better understand connections between the use of manure on land and nitrate in groundwater.

Soap isn’t the answer when there’s an oil spill.

An important part of our work is to find and control sources of pollution that don't come out of an industrial pipe.

Pullman sought a solution that would allow car washes to continue without dirty water entering nearby streams.

The illicit stormwater discharge often lurks out of sight under a city's buildings and streets. The challenge for cities is to locate and eliminate this pollution source.