In Indiana 15 power plants reported groundwater monitoring under the CCR Rule. All 15 have contamination of the groundwater so that it exceeds one or more health-based standards, and the groundwater has been rendered unfit for human consumption. Of the 15 power plants,

  • 80% have contamination with molybdenum, half of which exceed the molybdenum health advisory for drinking water by 20-fold or more
  • 80% have contamination with sulfate, the highest being 30 times the health advisory
  • 73% have contamination with boron, 80% of those exceed the health advisory for boron by 3-fold or more
  • Two-thirds have arsenic levels that exceed the drinking water standard by 2-fold or more
  • Half of them have contamination with lithium
  • One third have contamination with cobalt and one third with radioactive radium
  • On average, each power plant has 5 contaminants that exceed safe levels in drinking water
Power PlantContaminants exceeding a drinking water or health standard
BaillyAs, Cd, Li, Mo
BrownAs, B, Co, Li, Mo, Ra, sulfate
CayugaSb, As, B, Pb, Mo, sulfate
Clifty CreekAs, B, Co, Li, Mo, Ra, sulfate
CulleyAs, B, Co, Pb, Li, Mo, sulfate
Eagle ValleyAs, B, Pb, Mo, sulfate
GallagherAs, B, Pb, Mo, sulfate
GibsonAs, B, Pb, Mo, sulfate
Harding StreetSb, As, B, Li, Mo, sulfate
Michigan CityAs, Li, sulfate, Tl
PetersburgSb, As, B, Cd, Co, Li, Mo, Ra, sulfate
RockportAs, Ra
SchahferAs, B, Li, Mo, Ra, sulfate
WabashAs, B, Co, Pb, Li, Mo, sulfate


Taken from the 2017 annual groundwater monitoring reports filed for Indiana coal-fired power plants by Duke Energy, Indianapolis Power and Light, Indiana-Kentucky Electric Corp, Indiana-Michigan Power, Hoosier Energy, Northern Indiana Public Service Company, and Vectren. The reports are available via links to the utilities’ CCR pages from