Cheswick Generating Station

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Cheswick Generating Station has 15 groundwater monitoring wells, 9 of which have been polluted above federal advisory levels based on samples collected between February 11, 2010 and October 08, 2019. Groundwater at this site contains unsafe levels of manganese, sulfate, ammonia, boron, lithium and molybdenum.

Site description

NRG's Cheswick Generating Station was a 565 MW coal-fired power plant located in Springdale, Pennsylvania, on the Allegheny River in Allegheny County. The plant began operating in 1970. The facility was retired in April 2022. Coal ash from the site is currently disposed of at a solid waste landfill, called the Lefever Landfill, and in several on-site impoundments. From 1970 to the late 1990s, the power plant disposed of ash by injecting it into the 6,500-acre Harwick Mine Complex. The Cheswick Generating Station’s Ash Disposal Site, Recycle Pond, and Emergency Pond are regulated under the CCR rule. You can find the industry-reported data here. For more information on Cheswick Generating Station, see EIP’s 2019 National Coal Ash Report.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
9 / 15
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. ammonia boron lithium manganese molybdenum sulfate
Pollutants monitored and below guidelines
antimony arsenic barium beryllium cadmium chromium cobalt copper fluoride lead mercury nitrate radium selenium silver thallium
Pollutants not monitored
cyanide, gross alpha particle, gross beta particle, hexavalent chromium, nickel, nitrite, strontium, tritium, uranium

Facility last updated on Thursday, October 20, 2022 03:36:32 PM EDT