The Wisconsin Department of Natural Resources is wondering about water quality in some parts of Chippewa County.
The concerns come after regulators found higher than allowed levels of arsenic in a drainage pond at the Superior Silica Sands mine near New Auburn. DNR says the worry is that the arsenic seeped into streams or private wells, and may have ended-up in the drinking water supply. Superior Silica Sands filed for bankruptcy protection back in the summer.
Chippewa County leaders say the mine’s operator left them short on clean-up dollars.