PlainEnviro

EPA TRI Chemical

Ammonia

CAS Number: 7664-41-7

Total releases
866.9M lbs
Number of facilities
2,760
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, Ammonia (CAS 7664-41-7) is disclosed by 2,760 Form R facilities totaling 866.9M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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Ammonia (CAS 7664-41-7) is a chemical tracked by the EPA Toxics Release Inventory (TRI) program under Section 313 of the Emergency Planning and Community Right-to-Know Act. The TRI requires industrial facilities above specified threshold quantities to disclose annual manufacturing, processing, and otherwise-used volumes, along with quantities released to air, water, land, and off-site transfers.

A carcinogen flag, when present on other chemicals in this database, reflects an assessment from EPA, IARC, or the National Toxicology Program rather than a TRI-specific determination. The largest individual disclosure in the current dataset comes from BASIN ELECTRIC ANTELOPE VALLEY STATION in ND at 84.4M lbs.

TRI volumes are self-reported estimates, not measured stack emissions, and each pound counts equally regardless of chemical toxicity, so total pounds should not be equated with total risk. Inclusion of a chemical or facility in the TRI does not itself establish a health hazard; it documents the public right-to-know record. Consult EPA's IRIS (Integrated Risk Information System) and the Agency for Toxic Substances and Disease Registry for health-effect summaries.

AIR pathway mix

Ammonia: how the 866.9M lbs splits

866.9M lbs across all reported pathways

  • Air Releases667.0M lbs76.9%
  • Land Disposal143.0M lbs16.5%
  • Off-site Transfers32.7M lbs3.8%
  • Water Discharges24.2M lbs2.8%

Ammonia's 866.9M lbs Form-R total is AIR, with air releases making up 76.9% of the bar. Next segment: land disposal at 16.5%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Ammonia releases across all reporting facilities decreased by 11% (182.0M lbs → 162.6M lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Ammonia is dispersed: Louisiana accounts for 14.2% of the reported total (99 facilities). Next: Texas.

  • Louisiana 123.4M lbs
  • Texas 118.9M lbs
  • North Dakota 87.0M lbs
  • Georgia 57.3M lbs
  • Oklahoma 45.9M lbs
Industry Sources

Reporting for Ammonia is highly concentrated by industry: Chemicals facilities account for 50.1% of the reported total (802 facilities). Next: Electric Utilities.

  • Chemicals 434.3M lbs
  • Electric Utilities 143.3M lbs
  • Food 66.8M lbs
  • Paper 62.1M lbs
  • Nonmetallic Mineral Product 48.7M lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of Ammonia. Up to 50 shown.

# Facility Release (lbs)
1 Basin Electric Antelope Valley Station
84.4M lbs
2 Ascend Performance Materials-Chocolate Bayou Plant
44.1M lbs
3 Cf Industries Nitrogen LLC
39.7M lbs
4 Dyno Nobel- St.helens Plant
31.1M lbs
5 Koch Fertilizer Enid LLC
22.7M lbs
6 Pcs Nitrogen Fertilizer LP
19.5M lbs
7 Cornerstone Chemical Co LLC
19.0M lbs
8 Flopam Inc
16.5M lbs
9 Ineos Nitriles USA LLC Green Lake Plant
15.9M lbs
10 Climax Molybdenum Co
15.9M lbs
11 Basf Corp Attapulgus Ops
14.1M lbs
12 Pcs Nitrogen Ohio L.P.
12.3M lbs
13 Cf Industries Nitrogen Llc-Port Neal Nitrogen Complex
12.0M lbs
14 Nutrien US LLC
11.1M lbs
15 Terra Nitrogen L.P. Verdigris Plant
10.7M lbs
16 Koch Fertilizer Dodge City LLC
9.7M lbs
17 Ineos Nitriles USA LLC
8.6M lbs
18 Amalgamated Sugar Co
8.2M lbs
19 Blanchard Refining Co LLC
6.5M lbs
20 Kennametal Inc DBA Kennametal Firth Sterling
6.5M lbs
21 Advansix Inc Hopewell Plant
6.4M lbs
22 The Dow Chemical Co - Louisiana Operations
6.3M lbs
23 East Dubuque Nitrogen Fertilizers LLC
5.9M lbs
24 Materion Natural Resources Inc Mill
5.1M lbs
25 Scotts Co
5.0M lbs
26 Ergon Refining Inc
5.0M lbs
27 Methanex USA Services LLC
4.8M lbs
28 Terra International (oklahoma) Llc.
4.8M lbs
29 Dyno Nobel Inc-Cheyenne Plant
4.8M lbs
30 Rubicon LLC
3.8M lbs
31 Cf Industries Nitrogen LLC - Yazoo City Mississippi Plant
3.7M lbs
32 Lsb Chemical L.L.C.
3.6M lbs
33 Pcs Phosphate Co Inc
3.5M lbs
34 Tesoro Los Angeles Refinery-Carson Operations
3.5M lbs
35 Roehm America LLC
3.3M lbs
36 Central Bi-Products
3.3M lbs
37 Koch Fertilizer Ft. Dodge LLC
3.2M lbs
38 US Sugar Corp-Clewiston Sugar House
3.0M lbs
39 McDonough/atkinson Steam Electric Generating Plant
3.0M lbs
40 Koch Fertilizer Beatrice,llc
2.9M lbs
41 American Electric Power Welsh Plant
2.9M lbs
42 Pcs Nitrogen Fertilizer LP
2.8M lbs
43 Koch Fertilizer Wever LLC
2.8M lbs
44 Central Bi-Products
2.8M lbs
45 Si Group Inc
2.7M lbs
46 Amalgamated Sugar Co Nampa
2.7M lbs
47 Sappi N.a. Inc. - Somerset Operations
2.6M lbs
48 Lsb Chemical L.l.c
2.6M lbs
49 Galata Chemicals LLC - Galata Taft Facility
2.6M lbs
50 Pmc Biogenix Inc
2.5M lbs

Frequently Asked Questions

What is Ammonia in the EPA TRI? ▼
Ammonia (CAS Number: 7664-41-7) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 2,760 facilities in the United States report releasing this chemical to the EPA.
How much Ammonia is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 866.9M lbs of Ammonia releases to the EPA Toxic Release Inventory across 2,760 facilities. Release quantities are self-reported estimates covering air, water, land, and off-site transfers. They are disclosure totals, not toxicity-weighted harm scores.
How does EPA TRI classify Ammonia? ▼
Ammonia is not marked as a carcinogen in the TRI classification set. TRI classification flags document inventory listing status; they are not a site-specific exposure or health diagnosis. For health-effect summaries see EPA IRIS and ATSDR toxicological profiles.
Which facilities disclose the most Ammonia? ▼
Basin Electric Antelope Valley Station in ND reports the largest disclosed release of Ammonia in this dataset, at 84.4M lbs. Most reporting facilities for this chemical fall under chemicals. Release data is self-reported annually to the EPA under the TRI program. View the full list of 2,760 facilities on this page.
What is the CAS number for Ammonia? ▼
The CAS (Chemical Abstracts Service) Registry Number for Ammonia is 7664-41-7. CAS numbers are unique numerical identifiers assigned to every chemical substance described in the open scientific literature. This identifier is used to search scientific databases and regulatory filings.

Related Guides

Understanding TRI Data
How the Toxic Release Inventory works
Biggest Polluters in America
Which facilities release the most toxics
How to Check Environmental Quality
Step-by-step guide to checking your local environment

Health Information

Data comes from the EPA Toxic Release Inventory (TRI) program. Release quantities are self-reported by facilities and may represent estimates. The total shown aggregates reports across all facilities and reporting years.

PlainEnviro presents this data without advocacy framing. The presence of a chemical in the TRI database does not by itself indicate a health risk at current exposure levels. For health-related questions about specific chemical exposures, consult your local health agency or a toxicologist.

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Data sourced from the U.S. Environmental Protection Agency (EPA). See our methodology for details. Retrieved and formatted by PlainEnviro

Disclaimer: This information is provided for informational purposes only and does not constitute professional advice. Data is sourced from the EPA Toxic Release Inventory (TRI). Consult a qualified professional before making decisions based on this data.

Read our methodology - how this data is sourced, computed, and verified.