St. Clair County electric generation facilities discharge yearly around
12,000 pounds of toxic chemicals into local waterways.
They include 124 pounds of arsenic compounds,
10,200 pounds of barium compounds,
290 pounds of chromium compounds,
36 pounds of lead,
6 pounds of mercury,
and 122 pounds of nickel.

Wayne and Monroe counties, where DTE also operates power plants,
also has large releases of toxic pollution.
Wayne had 4,205 pounds of toxic pollutants yearly from power plants
released into surface waters and
Monroe released 30,847 pounds of pollutants yearly into surface waters.