Ammonia
Ammonia releases at Ottumwa Generating Station fell from 68k lb to 24k lb (64% lower) between 2023 and 2024.
TRI facility · TRI 2024 reporting year
Ottumwa Generating Station
Total reported releases 55k lb fell sharply year over year (-46%). Total releases concentrations have more than halved since 2010.
20775 POWER PLANT RD, Ottumwa, Iowa · 221112 · Electric Utilities · operated by Alliant Energy CORP
Anomaly engine
Notable Signals
Hydrogen fluoride
Hydrogen fluoride at Ottumwa Generating Station have more than three-quarters since 2010 (through 2024).
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) at Ottumwa Generating Station have more than halved since 2010 (through 2024).
Total reported releases
Total reported releases at Ottumwa Generating Station have more than halved since 2010 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Ammonia
Ammonia concentrations have more than doubled since 2018.
Barium compounds (except for barium sulfate (CAS No. 7727-43-7))
Barium compounds (except for barium sulfate (CAS No. 7727-43-7)) concentrations have more than halved since 2010.
Vanadium compounds
Vanadium compounds concentrations have more than doubled since 2010.
Manganese compounds
Manganese compounds concentrations have fallen 34% since 2010.
Hydrogen fluoride
Hydrogen fluoride concentrations have more than halved since 2010.
Copper compounds
Copper compounds concentrations have more than halved since 2010.
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)
Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) concentrations have more than halved since 2013.
Lead compounds
Lead compounds concentrations have more than halved since 2010.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (1 Census block groups, population-weighted demographics): a population of 781. Why we surface this →
20.2%
Low-income
2.7%
People of color
1.3%
Under age 5
13.3%
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.