Three PacifiCorp coal-fired power plants in Wyoming reported contamination of groundwater earlier this year above state or federal limits. That includes the Dave Johnston, Jim Bridger and Naughton plants. PacifiCorp reported detecting selenium, arsenic, lithium and many more polluting elements. A recent report from Earthjustice, a non-profit environmental law firm, drew attention to the information. It highlighted 67 plants across 22 states with the same problem.