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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Wastewater treatment plant operators protect water during pandemic
126 wastewater treatment plants, nearly 40% of Washington’s treatment systems, earned the top-performing status this year.
New report details pollutant sources for Hangman (Latah) Creek Watershed
To further understand water quality issues in the Hangman Creek Watershed, we performed a pollutant source assessment in 2018. The results of the study are now available.
New videos highlight the need to keep Skagit Valley streams wild and cool
Cold streams are crucial to protecting salmon and the wildlife that depend on them, including orcas. To help raise awareness of Skagit Valley’s warming waters, we’ve created four educational videos.
West Point Treatment Plant water quality permit up for review
We're updating the West Point Treatment Plant water quality permit with new requirements to better protect Puget Sound.
Working to solve the nutrients problem in Puget Sound
In 2020, we are taking a number of steps to reduce nutrient pollution from humans and clean up Puget Sound.
We oppose federal proposal to redefine 'waters of the United States'

Today, we sent our official response opposing a draft rule to redefine the scope of waters of the United States. The Clean Water Act is instrumental in protecting Washington's water.

Environmental restoration grants reach across state
For 2020, we are awarding local partners $257,000 in Terry Husseman Account grants to fund seven projects across the state designed to improve water quality to benefit Washington residents.
State provides new guidance for commercial marine fish net pens
New guidance available for commercial marine fish net pens in Puget Sound.
To prevent dead zones in Puget Sound, communities must tackle nutrient pollution
The Puget Sound Nutrient General Permit is a major milestone in restoring the health of Puget Sound.
Pump Out, Don’t Dump Out - Help protect Puget Sound!
The Pump Out, Don't Dump Out campaign reminds boaters that Puget Sound is a No Discharge Zone and encourages them to pump out their boat sewage.