Ottumwa Generating Station

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Ottumwa Generating Station has 13 groundwater monitoring wells, 9 of which have been polluted above federal advisory levels based on samples collected between April 26, 2016 and December 11, 2019. Groundwater at this site contains unsafe levels of lithium, sulfate, cobalt, boron, fluoride and radium.

Site description

Alliant Energy Corporation’s Ottumwa Generating Station is in Ottumwa, Iowa along the banks of the Des Moines River in Wapello County. Opened in 1981, Ottumwa Generating Station operates a single coal-fired unit capable of generating 726-MW of electricity. Plant Ottumwa operates both an onsite Ash Pond that borders the Des Moines River and offsite Coal Ash Landfill. In 2020 Alliant Energy announced a goal to retire all its coal power plants by 2040. Alliant Energy also has plans to expand both their Ash Pond and Landfill CCR disposal sites to accommodate the future coal ash waste. Ottumwa Generating Station’s Monofill and OGS Ash Pond are both regulated under the CCR rule.

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

Monitoring Wells Wells reporting one or more exceedances for at least one pollutant.
9 / 13
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. boron cobalt fluoride lithium radium sulfate
Pollutants monitored and below guidelines
antimony arsenic barium beryllium cadmium chromium lead mercury molybdenum 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 Tuesday, October 25, 2022 10:04:49 AM EDT