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EPA TRI Chemical

Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region)

EPA TRI Category Code: N090

Total releases
145.3M lbs
Number of facilities
1,026
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) (EPA TRI Category Code N090) is disclosed by 1,026 Form R facilities totaling 145.3M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) (EPA TRI Category Code N090) 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 CHEMICAL WASTE MANAGEMENT in AL at 7.5M 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

Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region): how the 145.3M lbs splits

145.3M lbs across all reported pathways

  • Land Disposal93.1M lbs64.1%
  • Off-site Transfers51.5M lbs35.5%
  • Air Releases399.6K lbs0.3%
  • Water Discharges245.3K lbs0.2%

Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region)'s 145.3M lbs Form-R total is MIXED, with land disposal making up 64.1% of the bar. Next segment: off-site transfers at 35.5%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) releases across all reporting facilities decreased by 3% (29.4M lbs → 28.5M lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) is dispersed: Nevada accounts for 11.7% of the reported total (12 facilities). Next: Alabama.

  • Nevada 17.0M lbs
  • Alabama 15.4M lbs
  • Alaska 13.9M lbs
  • Utah 9.0M lbs
  • Indiana 7.0M lbs
Industry Sources

Reporting for Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) is dispersed by industry: Hazardous Waste facilities account for 24.6% of the reported total (51 facilities). Next: Metal Mining.

  • Hazardous Waste 35.7M lbs
  • Metal Mining 33.7M lbs
  • Primary Metals 29.2M lbs
  • Chemicals 19.9M lbs
  • Electric Utilities 11.7M lbs

Which facilities release the most of this chemical?

Facilities with the largest reported releases of Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region). Up to 50 shown.

# Facility Release (lbs)
1 Chemical Waste Management
7.5M lbs
2 Outokumpu Stainless USA LLC
7.4M lbs
3 Fort Knox Mine
7.2M lbs
4 Red Dog Operations
6.2M lbs
5 Nevada Gold Mines LLC - Goldstrike Mines Inc
5.7M lbs
6 Nevada Gold Mines LLC - Turquoise Ridge
5.2M lbs
7 Energysolutions LLC
5.0M lbs
8 North American Stainless
4.2M lbs
9 Chemours Johnsonville Plant
4.0M lbs
10 National Beef Leathers LLC
3.4M lbs
11 Nevada Gold Mines LLC - Carlin South Area
2.7M lbs
12 Clean Harbors el Dorado LLC
2.6M lbs
13 Chemours Delisle Plant
2.6M lbs
14 P4 Production LLC
2.5M lbs
15 Uss Gary Works
2.4M lbs
16 American Chrome & Chemicals
2.3M lbs
17 Clean Harbors Aragonite LLC
2.1M lbs
18 Prairie State Generating Co
2.0M lbs
19 US Ecology Texas Inc
2.0M lbs
20 Envirite of Ohio Inc
1.9M lbs
21 Wayne Disposal Inc
1.7M lbs
22 Tronox LLC
1.7M lbs
23 Nucor Steel-Berkeley
1.6M lbs
24 Eq Detroit Inc
1.6M lbs
25 Ati Flat Rolled Products Holdings LLC
1.5M lbs
26 Freeport-McMoran Miami Inc
1.5M lbs
27 Envirite of Pennsylvania Inc
1.4M lbs
28 Vickery Environmental Inc.
1.4M lbs
29 Freeport-McMoran Bagdad Inc
1.4M lbs
30 Corhart Refractories
1.4M lbs
31 Georgia Mineral Operations
1.4M lbs
32 Nevada Gold Mines LLC - Phoenix Mine
1.3M lbs
33 Clean Harbors Lone Mountain LLC Lone Mountain Facility
1.3M lbs
34 Chemical Waste Management - la Ke Charles Facility
1.2M lbs
35 Cleveland-Cliffs Burns Harbor LLC
1.1M lbs
36 Pcs Phosphate Co Inc
1.1M lbs
37 Clean Harbors Deer Park LLC
1.0M lbs
38 Clean Earth of North Jersey Inc
945.0K lbs
39 Eastman Chemical Co Tennessee Operations
904.9K lbs
40 Cleveland-Cliffs Steel Corp Dearborn Works
899.3K lbs
41 Clean Harbors Environmental Services Inc
882.7K lbs
42 Nevada Gold Mines Llc-Cortez District
818.6K lbs
43 US Ecology Nevada Inc.
782.1K lbs
44 Gavin Power LLC
737.2K lbs
45 Kennecott Utah Copper Smelter & Refinery
707.7K lbs
46 Coffeyville Resources Nitrogen Fertilizers LLC
696.3K lbs
47 Procter & Gamble Mfg. Co.
692.5K lbs
48 Alcoa Warrick Newco LLC
615.8K lbs
49 Carpenter Technology Corp
605.7K lbs
50 Envirite of Illinois Inc
601.7K lbs

Frequently Asked Questions

What is Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) in the EPA TRI? ▼
Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) (EPA TRI Category Code: N090) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 1,026 facilities in the United States report releasing this chemical to the EPA.
How much Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 145.3M lbs of Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) releases to the EPA Toxic Release Inventory across 1,026 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 Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region)? ▼
Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) 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 Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region)? ▼
Chemical Waste Management in AL reports the largest disclosed release of Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) in this dataset, at 7.5M lbs. Most reporting facilities for this chemical fall under hazardous waste. Release data is self-reported annually to the EPA under the TRI program. View the full list of 1,026 facilities on this page.
Why is Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region) listed under code N090 instead of a CAS number? ▼
N090 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, "Chromium and Chromium Compounds(except for Chromite Ore Mined in the Transvaal Region)" 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
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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.