KINGSTON, Tennessee (CNN) -- The Environmental Protection Agency has found high levels of arsenic and heavy metals in two rivers in central Tennessee that are near the site of a spill that unleashed more than a billion gallons of coal waste.
The agency said it found "several heavy metals" in the water in levels that are slightly above safe drinking-water standards but "below concentrations" known to be harmful to humans.
"The one exception may be arsenic," the agency said in a letter to an affected community. "One sample of river water out of many taken indicated concentrations that are very high and further investigations are in progress."
However, arsenic was not detected in a water intake facility near Kingston, Tennessee, where the spill happened, said EPA spokeswoman Laura Niles.
The metals were found in the Emory and Clinch rivers, near the site of a major spill last week that unleashed enough sludge to fill 1,660 Olympic-size swimming pools.
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http://www.cnn.com/2008/US/12/29/tennessee.sludge/index.html