New study shows high uranium levels in some wells in northeaster - Spokane, North Idaho News & Weather KHQ.com

New study shows high uranium levels in some wells in northeastern Washington

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A map from a recent U.S. Geological Survey study shows historical uranium concentrations in wells across northeastern Washington. (USGS / Courtesy) A map from a recent U.S. Geological Survey study shows historical uranium concentrations in wells across northeastern Washington. (USGS / Courtesy)

Wells in northeastern Washington frequently have high uranium concentrations. The Spokesman-Review reports that it's sometimes as much as 40 times the level considered safe for drinking water.

A new study from the U.S. Geological Survey sampled water from 13 wells and looked at historical data on uranium concentrations.

Half the wells sampled had levels of uranium above 30 micrograms per liter, the Environmental Protection Agency’s standard for drinking water.

According to the Spokesman-Review, a Spokane County well along Deer Creek recorded the highest level: 1,180 micrograms per liter of water.

Uranium occurs naturally in the rock deposits that are common in northeastern Washington, and the Spokane area is no stranger to its impacts. In fact, many Spokane Indians living near the Midnite Mine, which sold uranium ore to the U.S. Atomic Energy Commission during the Cold War, believe the Superfund site is responsible for high cancer rates among tribe members.

Most historical data on uranium levels in groundwater dates from the 1970s, and was gathered for better information about where the radioactive mineral could be mined.

Sue Kahle, the USGS hydrologist leading the study, found 60 percent of wells in the historical data had uranium concentrations above safe drinking water guidelines.

Kahle will be presenting the results and answering questions about the study at 7 p.m. Thursday at Spokane Community College’s Lair Auditorium.

She told the Spokesman-Review that she hoped the information would help people be aware of the potential for high uranium levels in well water and encourage people to get their own water tested.

Exposure to uranium raises the risk of kidney damage and cancer. The Washington Department of Health recommends private well owners test their levels once and, if high concentrations are found, explore treatment options like reverse osmosis filtration.

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