W.A. Parish Electric Generating Station

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W.A. Parish Electric Generating Station has 64 groundwater monitoring wells, 61 of which have been polluted above federal advisory levels based on samples collected between May 24, 2010 and October 18, 2019. Groundwater at this site contains unsafe levels of sulfate, manganese, arsenic, strontium, fluoride, boron, lithium, molybdenum, antimony, chromium, cobalt, selenium, thallium, barium and mercury.

Site description

NRG Energy’s W.A. Parish Electric Generating Station is a 2,737-MW plant with four coal-fired units and four gas-fired units. The plant is located adjacent to Smithers Lake, near Thompsons, Texas in Fort Bend County. It is the largest power plant in Texas and the second largest fossil-fuel burning plant in the country and began operations in 1977.This facility is among the U.S. Environmental Protection Agency's list of potential damage cases, indicating that it has potentially polluted groundwater or surface water at levels which threaten human health and the environment. W.A. Parish has a landfill and two ponds (Air Preheater Pond and FDG Emergency Pond) regulated under the federal coal ash rule. You can find the industry reported data here.

For more information on the W.A. Parish Generating Station, see EIP's reports, Risky Business, Groundwater Contamination from Texas Coal Ash Dumps and EIP's 2019 National Coal Ash Report Coal's Poisonous Legacy.

For more information about Texas Coal Ash, see Earthjustice's fact sheet, Texas and Coal Ash Disposal in Ponds and Landfills.

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
61 / 64
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 barium boron chromium cobalt fluoride lithium manganese mercury molybdenum selenium strontium sulfate thallium
Pollutants monitored and below guidelines
beryllium cadmium copper lead nickel radium silver
Pollutants not monitored
ammonia, cyanide, gross alpha particle, gross beta particle, hexavalent chromium, nitrate, nitrite, tritium, uranium

Facility last updated on Friday, October 14, 2022 04:36:17 PM EDT