EPA TRI Facility · Electric Utilities
Ottumwa Generating Station
Ottumwa, IA · Parent: Alliant Energy Corp
- Total releases
- 1.0M lbs
- Chemicals reported
- 23
- Carcinogens
- 5
- Primary pathway
- Off-site Transfers
MIXED Form-R mix
Ottumwa Generating Station: how the 1.0M lbs splits
1.0M lbs across all reported pathways
- Off-site Transfers 407.5K lbs 40.7%
- Air Releases 393.2K lbs 39.2%
- Land Disposal 195.7K lbs 19.5%
- Water Discharges 5.7K lbs 0.6%
Ottumwa Generating Station's 1.0M lbs Form-R total is MIXED - off-site transfers is 40.7% of the bar. Next segment: air releases at 39.2%. Leading chemical by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)).
Carcinogen-classified pounds vs other reported pounds
Same cumulative TRI total as above, split by EPA/IARC carcinogen classification on each chemical: pounds share, not chemical count. Classification is not a site health-risk score.
HEAVY volume MIXED pathway TRACE-CARC
Ottumwa Generating Station is an EPA Toxics Release Inventory reporter in Ottumwa, IA, in the electric utilities sector. It reported 102.9K lbs of releases across 15 chemicals in 2023, and 1.0M lbs in total across its 2019-2023 reporting years. That ranks 1,298 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Iowa's 460 reporting TRI sites, pounds #1 is not chemical-count #1. Ottumwa Generating Station is pounds #31 and chemical-count #5 at 1.0M lbs. Climax Molybdenum Co leads reported pounds (16.4M lbs) at 5 chemicals (chemical-count #117). Helena Industries LLC leads chemical count at 32 chemicals (9.4K lbs, pounds #247). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Cargill Corn Milling; Ajinomoto Health & Nutrition N.a. Inc.; Wacker Chemical Corp; Eddyville Chlor-Alkali LLC. Similar-scale Electric Utilities peers outside Iowa: Grand River Dam Authority Coal Fired Complex; Electric Energy Inc; Duke Energy Progress LLC - Smith Energy Complex; Gulf Clean Energy Center. Other Alliant Energy Corp sites in this extract: Columbia Energy Center; Edgewater Generating Station; Lansing Power Station; Burlington Generating Station. Largest disclosed chemicals by pounds: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)); Ammonia; Manganese compounds; Vanadium compounds.
Ottumwa Generating Station is a HEAVY · MIXED-pathway Form-R site in Ottumwa, IA: 1.0M lbs across 23 chemicals (5 carcinogen-classified, TRACE-CARC). No single media clears 70% of the bar (lead segment off-site transfers at 40.7%). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Grand River Dam Authority Coal Fired Complex and Electric Energy Inc.
Ottumwa Generating Station vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
1.0M lbs Top 5% higher than 95% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Ottumwa Generating Station in the Electric Utilities sector extract
Among the 513 Electric Utilities facilities in this database, Ottumwa Generating Station reports the 184th-largest volume (1.0M lbs). Scale peers outside Iowa include Grand River Dam Authority Coal Fired Complex and Electric Energy Inc.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Ottumwa Generating Station's total reported releases fell from 128.0 thousand lb in 2022 to 102.9 thousand lb in 2023, based on EPA TRI filings.
- Ottumwa Generating Station's off-site transfers fell from 44.9 thousand lb in 2022 to 23.5 thousand lb in 2023, based on EPA TRI filings.
- Ottumwa Generating Station's water releases fell from 665 lb in 2022 to 519 lb in 2023, based on EPA TRI filings.
- Ottumwa Generating Station's air releases fell from 82.4 thousand lb in 2022 to 78.9 thousand lb in 2023, based on EPA TRI filings.
Ottumwa Generating Station Form-R facts
Compare this facility
See how Ottumwa Generating Station stacks up against nearby facilities and the typical reporter.
76% less than the comparison
35% more than the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How Ottumwa Generating Station releases toxic chemicals into the environment. Total: 1.0M lbs.
Emissions Trend Summary
From 2019 to 2023, total releases decreased by 68% (317.2K lbs to 102.9K lbs).
Ottumwa Generating Station: annual Form-R pounds
HEAVY site · MIXED pathway · TRI years 2019–2023
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
What this shows Ottumwa Generating Station year-over-year reported totals (decreased by 68% from 2019 to 2023). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 317.2K lbs | 17 |
| 2020 | 184.7K lbs | 16 |
| 2021 | 269.4K lbs | 17 |
| 2022 | 128.0K lbs | 15 |
| 2023 | 102.9K lbs | 15 |
Chemical Releases
Aggregated across all reporting years (2019–2023). 5 of 23 chemicals are carcinogens. Sorted by total release volume.
Ottumwa Generating Station in Wapello
Nearest TRI Facilities to Ottumwa Generating Station
Closest other reporters in Iowa - including Cargill Corn Milling, Ajinomoto Health & Nutrition N.a. Inc., Wacker Chemical Corp, ordered by distance.
Showing 8 of 459 other reporting facilities in Iowa.
Similar Electric Utilities Facilities
Other Electric Utilities facilities with similar total release volumes (±80%), outside Iowa - e.g. Grand River Dam Authority Coal Fired Complex, Electric Energy Inc, Duke Energy Progress LLC - Smith Energy Complex.
Compare beyond Iowa
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Ottumwa Generating Station on cumulative reported pounds (1.0M lbs) and distinct chemical count (23). Release-pound peers include Cabot Corp Ville Platte Plant, Steamboat Processing Facility, US Doe Idaho National Laboratory Site. Chemical-count peers include Woodland Pulp LLC, Brenntag Northeast LLC, Aes Warrior Run Inc. Neighborhoods are forced disjoint so each axis surfaces a different set of sites.
Similar reported release pounds
Nearest out-of-state reporters (≥1,000 lbs) by absolute TRI pounds, not same-industry or same-county neighbors.
- Cabot Corp Ville Platte Plant Ville Platte, LA · Chemicals 1.0M lbs reported
- Steamboat Processing Facility Douglas, WY · Natural Gas Processing 1.0M lbs reported
- US Doe Idaho National Laboratory Site Scoville, ID · Transportation Equipment 1.0M lbs reported
- Graymont (wi) Inc. Superior, WI · Nonmetallic Mineral Product 1.0M lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Alliant Energy Corp Facilities
Same-parent TRI sites ranked by reported releases - including Columbia Energy Center, Edgewater Generating Station, Lansing Power Station.
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Ammonia, Manganese compounds, Vanadium compounds; nearby reporters include Cargill Corn Milling. Ottumwa Generating Station stamps HEAVY volume · MIXED pathway · TRACE-CARC carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This Ottumwa Generating Station TRI extract (HEAVY · MIXED · TRACE-CARC · lead Barium compounds (except for barium sulfate (CAS No. 7727-43-7))) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Ottumwa Generating Station totals are self-reported EPCRA §313 estimates for Ottumwa, IA, latest year 2023. Form-R rows span 2019–2023 (5 years). NAICS 221112 · Electric Utilities. 22.7% of Wapello TRI pounds in this extract. Nearest ABS peer: Cabot Corp Ville Platte Plant (Δ 443 lbs). Pounds ≠ exposure.
Ottumwa Generating Station stamps HEAVY · MIXED pathway (off-site transfers leads at 40.7%). Pipeline-rendered EPA Form-R only - no editor-typed pounds. Corrections: editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov