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Water quality

Ecology is responsible for keeping Washington waters clean and helping polluted waters recover.
Ecology is responsible for keeping Washington waters clean and helping polluted waters recover.

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196 results.

Latest Sumas-Blaine aquifer nitrate study sets the stage for large study in 2018

Nitrate in groundwater is a concern because of the risk of methemoglobinemia, or “blue-baby syndrome."

What We Do
New study finds widespread PFAS contamination – but also signs of progress

Per- and poly- fluorinated alkyl substances (aka PFAS, PFCs, PFOS) are building up in waterways and fish, but phasing them out could decrease chemical exposure.

Alerts
Eyes Over Puget Sound; Sunny, warm, and colorful

Late summer 2017 brings warm air temperatures and drier conditions throughout Puget Sound. Streamflows in the region's northern rivers are lower than rivers in South Puget Sound.

Science
Puget Sound Nutrient Watch: A new blog series

This Puget Sound Nutrient Watch looks at the importance of excess nutrients and how they affect Puget Sound.

What We Do
Ecology has received a new request to use Imidacloprid to control burrowing shrimp

We are evaluating an application requesting permission to use the pesticide Imidacloprid to control burrowing shrimp in Willapa Bay and Grays Harbor.

What We Do
Eyes Over Puget Sound: River flows above normal

Cooler and wetter conditions set the stage for a favorable supply of freshwater in June 2017.

Science
Finding a balanced approach for aquatic plant management
Our draft environmental study reviews eight new chemicals, five alternatives for management, and updates information on other chemicals currently covered under the permits.
What We Do
Commercial net pen aquaculture planning meeting March 23
You are invited to attend the next planning meeting for updating the Recommendations for Managing Commercial Net Pen Aquaculture in Washington's straits and estuaries.
What We Do
Even on the 'dry side' we can have healthy streamsides
Riparian restoration experts face many challenges including poor seedling survival, slow tree growth, disconnected floodplains, livestock damage, and competition from noxious weeds.
What We Do
Clean water funding continues to support local communities

This year, we’re proposing $188 million in financial assistance for 165 high-priority clean-water projects.

What We Do

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