Pat Laughrin, a member of the Calumet County Board, says water at his home used to have elevated levels of arsenic caused by a drop in the water table after installation of nearby high-capacity wells. But water levels have returned to normal after a neighboring farm owner reduced pumping, he said, and the most recent tests show no arsenic. Certain activities, such as drawdown, can increase the presence of the natural contaminant, scientists say.
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