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EPA TRI Chemical

Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution)

EPA TRI Category Code: N511

Total releases
1368.6M lbs
Number of facilities
2,961
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) (EPA TRI Category Code N511) is disclosed by 2,961 Form R facilities totaling 1368.6M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) (EPA TRI Category Code N511) 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 ASCEND PERFORMANCE MATERIALS OPERATIONS LLC in FL at 88.5M 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.

MIXED pathway mix

Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution): how the 1368.6M lbs splits

1368.6M lbs across all reported pathways

  • Water Discharges884.6M lbs64.6%
  • Land Disposal260.9M lbs19.1%
  • Off-site Transfers221.5M lbs16.2%
  • Air Releases1.6M lbs0.1%

Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution)'s 1368.6M lbs Form-R total is MIXED, with water discharges making up 64.6% of the bar. Next segment: land disposal at 19.1%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) releases across all reporting facilities decreased by 14% (293.9M lbs → 252.9M lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) is dispersed: Texas accounts for 7.3% of the reported total (187 facilities). Next: Florida.

  • Texas 100.4M lbs
  • Florida 94.6M lbs
  • Indiana 80.6M lbs
  • Virginia 66.8M lbs
  • Louisiana 64.3M lbs
Industry Sources

Reporting for Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) is concentrated by industry: Food facilities account for 36.0% of the reported total (701 facilities). Next: Chemicals.

  • Food 492.5M lbs
  • Chemicals 315.1M lbs
  • Petroleum 154.9M lbs
  • Primary Metals 130.4M lbs
  • Other 90.4M lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution). Up to 50 shown.

# Facility Release (lbs)
1 Ascend Performance Materials Operations LLC
88.5M lbs
2 Cleveland-Cliffs Steel Corp (rockport Works )
57.1M lbs
3 U.S. Army Radford Army Ammunition Plant
49.6M lbs
4 Delaware City Refinery
29.7M lbs
5 US Army Holston Army Ammunition Plant
22.3M lbs
6 Dyno Nobel Inc-Cheyenne Plant
22.2M lbs
7 Smithfield Packaged Meats Corp - Sioux Falls
21.0M lbs
8 Nevada Gold Mines LLC - Turquoise Ridge
20.5M lbs
9 McCain Foods USA Inc.
20.2M lbs
10 Cleveland-Cliffs Steel Corp
19.8M lbs
11 Ecovyst Catalyst Technologies LLC
18.7M lbs
12 Smithfield Fresh Meats Corp - Tar Heel
18.6M lbs
13 North American Stainless
17.4M lbs
14 Phillips 66 Co-Bayway Refinery
17.1M lbs
15 Uss-Clairton Plant
16.0M lbs
16 Lamb Weston Inc Richland Facility
13.0M lbs
17 Jbs/swift Pork Co
12.9M lbs
18 Tyson Fresh Meats Inc - Joslin Il
12.0M lbs
19 Jbs Plainwell
11.7M lbs
20 Pryor Solae
11.3M lbs
21 Perdue Foods LLC - Lewiston Processing Plant
11.3M lbs
22 Tyson Fresh Meats Inc
11.3M lbs
23 McCain Foods USA Inc
11.2M lbs
24 Mullins Cheese Inc
11.2M lbs
25 Wood River Refinery
10.8M lbs
26 Sabic Innovative Plastics Mt. Vernon LLC
10.5M lbs
27 Foremost Farms USA
9.8M lbs
28 Pilgrim's Pride Corp Mt Pleasant Complex
9.8M lbs
29 Tyson Farms Inc. - Carthage Ms Processing Plant
9.7M lbs
30 Swift Pork
8.9M lbs
31 Valero Refining - Texas L.P. Houston Refinery
8.8M lbs
32 Nevada Gold Mines Llc-Cortez District
8.6M lbs
33 Cf Industries Nitrogen LLC
8.3M lbs
34 Isp Technologies Inc
8.0M lbs
35 Basf Corp Attapulgus Ops
7.9M lbs
36 Cargill Meat Solutions Corp
7.9M lbs
37 Smithfield Fresh Meats Corp-Crete
7.5M lbs
38 Anheuser-Busch LLC
7.4M lbs
39 Chevron Products Co. Div of Chevron USA Inc.
7.3M lbs
40 Tyson Poultry Inc-Broken Bow Processing Plant
7.1M lbs
41 Tyson Fresh Meats Inc-Louisa County
7.1M lbs
42 Koch Foods of Gadsden
7.0M lbs
43 Perdue Foods LLC - Cromwell Processing Plant
6.8M lbs
44 Sanderson Farms LLC
6.4M lbs
45 Creekstone Farms Premium Beef LLC
6.2M lbs
46 Valero Refining-Texas LP
6.1M lbs
47 Carpenter Technology Corp
6.0M lbs
48 Citgo Petroleum Corp
5.8M lbs
49 Glanbia Foods Inc
5.8M lbs
50 McCain Foods USA Inc
5.7M lbs

Frequently Asked Questions

What is Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) in the EPA TRI? ▼
Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) (EPA TRI Category Code: N511) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 2,961 facilities in the United States report releasing this chemical to the EPA.
How much Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 1368.6M lbs of Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) releases to the EPA Toxic Release Inventory across 2,961 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 Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution)? ▼
Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) 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 Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution)? ▼
Ascend Performance Materials Operations LLC in FL reports the largest disclosed release of Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) in this dataset, at 88.5M lbs. Most reporting facilities for this chemical fall under food. Release data is self-reported annually to the EPA under the TRI program. View the full list of 2,961 facilities on this page.
Why is Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution) listed under code N511 instead of a CAS number? ▼
N511 is an EPA TRI Category Code, not a CAS Registry Number. EPA assigns category codes (N-prefix and K-prefix) to chemical groups that share reporting requirements, for example, "Nitrate Compounds (water Dissociable; Reportable Only When in Aqueous Solution)" covers many distinct compounds aggregated for TRI reporting. Individual constituents may have their own CAS Registry Numbers (e.g., elemental Lead is CAS 7439-92-1), but the group is reported under the single TRI Category Code.

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.