A former 3M chemical has been found in fish taken from more metro area lakes, including Cedar, Calhoun and Lake of the Isles in Minneapolis.
The compound, known as PFOS, was measured at levels of concern in 13 of 22 lakes, mostly in bluegills, black crappies and largemouth bass.
The Minnesota Pollution Control Agency (MPCA) released the data Monday from fish tested in 2008, the agency's third year of checking fish.
Pat McCann, research scientist for the Minnesota Department of Health, said that the data are being reviewed and that the department may issue advice about eating fish less often from some of the lakes.
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