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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Innovative Regional Septic Loan Program partnership wins EPA and local awards
Our program was incredibly successful in its first year. It prevented 36 million gallons, equal to 55 Olympic-sized swimming pools, of wastewater from flowing into Puget Sound watershed.
Citizen science at Washington beaches

"Involving citizen science volunteers is vital to our monitoring program. Especially in smaller communities," said Julianne Ruffner, manager of Ecology's BEACH program.

New report compiles information about Washington’s groundwater health
A new report called the Washington Nitrate Prioritization Project identifies groundwater areas in the state that are most vulnerable to nitrate contamination.
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.

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.

Working together in Whatcom County to understand the manure-groundwater connection
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.
PFAS Sampling in Lake Washington
Scientists from our Toxic Studies Unit recently completed the first round of sampling as part of a new PFAS study in Lake Washington and its tributaries.
$21.2 million awarded for clean water projects in the southwest region
We're offering financial assistance for 26 high-priority projects.
Fecal Matters: Saltwater State Park is now open to the public, King County
Seattle and King County Public Health have lifted the no-contact advisory to water contact at Saltwater State Park and Washington State Parks have re-opened the park to the public.
Even tiny pollution makes a big problem for water quality

Looking for feedback on tools to address pollution in the Spokane River.