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.