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A new study from the U.S. Geological Survey looked at how wildfires impact mercury concentrations in headwater streams in Oregon, Washington and Idaho.

Oregon farmers raising sheep, chicken or cows will soon have to comply with new state rules.

Water quality levels on the Klamath River are continuing to improve amid dam deconstruction work, according to the North Coast Regional Water Quality Control Board.

A community in Red Bluff, California was recently notified that their water had alarming concentrations of chemicals called PFAS. Data shows that the site has had high levels of contamination for several years.

“If this pollution was happening in an affluent Portland suburb, it would be stopped,” attorney Steve Berman said.

Recent federal data shows that the water supply in Redding, California had around three times the recommended level of toxic chemicals in the water. But that data was taken out of context, and the city’s water supply is safe, according to officials.

The Yurok, Port Gamble S’Klallam and Puyallup tribes, and the attorneys general of Oregon and Washington, want the chemical banned to save salmon.

The operators of Winchester Dam near Roseburg face more than $134,000 in fines for water violations on top of $27.6 million for killing lamprey.

Leaky fuel and other toxins from hundreds of abandoned ships in Oregon and Washington pose serious environmental risks.

Federal officials have ordered testing water for 29 PFAS-type chemicals and lithium, but the agency lacks regulations on what states should do with most results.

Federal lawmakers this week considered drinking water problems in rural Oregon as prime examples of a national crisis.

At a recent hearing of the U.S. Senate Committee on the Environment and Public Works, senators pointed to Eastern Oregon, where more than 4,000 wells are at risk from decades of nitrate pollution, and to Central Oregon, where dozens of people blame a gravel mine for sudden plumbing disasters and health concerns.