Joliet Generating Station No. 9

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Joliet Generating Station No. 9 has 10 groundwater monitoring wells, 10 of which have been polluted above federal advisory levels based on samples collected between November 19, 2015 and November 19, 2019. Groundwater at this site contains unsafe levels of molybdenum, boron, lithium, arsenic, sulfate and radium.

Site description

Joliet Generating Station No. 9 is a 360 MW facility owned and operated by NRG Energy in Joliet, Illinois in Will County. The plant was first built in 1959 with one coal-fired unit, located adjacent to the Des Plaines River. The plant was converted to natural gas in 2016. Joliet has four disposal areas regulated under the CCR rule: the Southeast Pond, Settling Pond, Main Quarry, and West Filled Area. Joliet Generating Station No. 9's combined on-site waste release with Joliet Generating Station No. 29 was reported as 994,910 pounds in 2011 according to the EPA's Toxic Release Inventory.

You can find the industry-reported data here. For more information about Joilet 9, see EIP's 2019 National Coal Ash Report.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
10 / 10
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. arsenic boron lithium molybdenum radium sulfate
Pollutants monitored and below guidelines
antimony barium beryllium cadmium chromium cobalt fluoride lead mercury selenium thallium
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 Friday, October 14, 2022 02:16:49 PM EDT