Seminole Generating Station

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Seminole Generating Station has 35 groundwater monitoring wells, 24 of which have been polluted above federal advisory levels based on samples collected between December 17, 2009 and November 09, 2015. Groundwater at this site contains unsafe levels of boron, sulfate and arsenic.

Site description

Seminole Electric Cooperative, Inc.'s Seminole Generating Station is a 650-MW coal-fired power plant that began operating in 1984. The plant is located near the St. John's River just outside of Palatka, Florida. Waste from the plant is disposed of into an unlined flue gas desulfurization landfill, two unlined stormwater runoff ponds, and three lined process wastewater ponds. In 2004, Seminole Electric Cooperative constructed a groundwater collection system to capture contaminated groundwater from deep and shallow aquifers underlying the landfill.

Seminole Generating Station 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. For more information regarding Seminole Generating Station, see EIP's 2010 report, Out of Control and visit

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
24 / 35
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 sulfate
Pollutants monitored and below guidelines
barium beryllium cadmium chromium copper lead mercury nickel selenium silver
Pollutants not monitored
ammonia, antimony, cobalt, cyanide, fluoride, gross alpha particle, gross beta particle, hexavalent chromium, lithium, manganese, molybdenum, nitrate, nitrite, radium, strontium, thallium, tritium, uranium

Facility last updated on Friday, June 14, 2019 11:18:20 AM EDT