Petersburg Generating Station

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Petersburg Generating Station has 23 groundwater monitoring wells, 21 of which have been polluted above federal advisory levels based on samples collected between September 28, 2016 and November 06, 2019. Groundwater at this site contains unsafe levels of boron, sulfate, molybdenum, lithium, arsenic, cobalt, cadmium, radium, antimony, lead and thallium.

Site description

Petersburg Generating Station is a 1,700-MW facility owned and operated by AES Indiana (formerly Indianapolis Power & Light Co.) near Petersburg, Indiana. It was composed of four coal-powered units until Unit 1 was retired in 2021, while Unit 2 is scheduled for retirement in 2023. The remaining two units are expected to be retired by 2025 following the company’s announcement that it will abandon coal entirely as a fuel source by 2025, though AES has yet to declare a retirement date for the facility. Petersburg has three ash ponds and a landfill regulated under the federal coal ash rule. The Petersburg Generating Station is among EPA’s list of potential damage cases – indicating it has polluted groundwater or surface water at levels which threaten human health and the environment.

You can find the industry-reported data here. For more information about the Petersburg Generating Station, see EIP's 2019 National Coal Ash Report.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
21 / 23
Wells not shown Locations for the following wells are unavailable:

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No exceedances
One or more exeedances
No data available
Other designation
Well "halo" size corresponds to mean concentration. Please note that some wells may not be visible on the map due to overlapping locations.
Pollutants monitored and above guidelines
Tip: Click on a contaminant to view wells that have recorded exceedances. Click again to remove the filter. antimony arsenic boron cadmium cobalt lead lithium molybdenum radium sulfate thallium
Pollutants monitored and below guidelines
barium beryllium chromium fluoride mercury selenium
Pollutants not monitored
ammonia, copper, cyanide, gross alpha particle, gross beta particle, hexavalent chromium, manganese, nickel, nitrate, nitrite, silver, strontium, tritium, uranium

Facility last updated on Monday, October 17, 2022 09:50:39 AM EDT