PlainEnviro

EPA TRI Chemical

Thallium Compounds

EPA TRI Category Code: N760

Total releases
4.9M lbs
Number of facilities
32
Carcinogen
No
PBT substance
No
Verify at EPA TRI →

According to the EPA Toxics Release Inventory, Thallium Compounds (EPA TRI Category Code N760) is disclosed by 32 Form R facilities totaling 4.9M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

View saved records

Thallium Compounds (EPA TRI Category Code N760) 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 NEVADA GOLD MINES LLC - CARLIN SOUTH AREA in NV at 2.5M 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.

LAND pathway mix

Thallium Compounds: how the 4.9M lbs splits

4.9M lbs across all reported pathways

  • Land Disposal4.8M lbs96.9%
  • Off-site Transfers147.1K lbs3.0%
  • Air Releases6.3K lbs0.1%
  • Water Discharges1.1K lbs<0.1%

Thallium Compounds's 4.9M lbs Form-R total is LAND, with land disposal making up 96.9% of the bar. Next segment: off-site transfers at 3.0%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Thallium Compounds releases across all reporting facilities decreased by 34% (1.3M lbs → 852.4K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Thallium Compounds is highly concentrated: Nevada accounts for 68.1% of the reported total (4 facilities). Next: Texas.

  • Nevada 3.4M lbs
  • Texas 459.7K lbs
  • Utah 244.4K lbs
  • Kentucky 237.0K lbs
  • Indiana 235.0K lbs
Industry Sources

Reporting for Thallium Compounds is highly concentrated by industry: Metal Mining facilities account for 71.1% of the reported total (6 facilities). Next: Electric Utilities.

  • Metal Mining 3.5M lbs
  • Electric Utilities 1.0M lbs
  • Hazardous Waste 303.0K lbs
  • Primary Metals 107.2K lbs
  • Nonmetallic Mineral Product 7.9K lbs

Which facilities release the most of this chemical?

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

# Facility Release (lbs)
1 Nevada Gold Mines LLC - Carlin South Area
2.5M lbs
2 Nevada Gold Mines LLC - Goldstrike Mines Inc
517.7K lbs
3 Nevada Gold Mines LLC - Turquoise Ridge
336.8K lbs
4 Oak Grove Steam Electric Station
279.3K lbs
5 Gibson Generating Station
182.9K lbs
6 Fort Knox Mine
141.0K lbs
7 Clean Harbors Aragonite LLC
137.7K lbs
8 Martin Lake Steam Electric Station & Lignite Mine
123.5K lbs
9 Kentucky Utilities Co Ghent Station
122.1K lbs
10 Chemical Waste Management
61.0K lbs
11 Kennecott Utah Copper Smelter & Refinery
59.8K lbs
12 U.S. Tva Cumberland Fossil Plant
54.9K lbs
13 U.S. Tva Shawnee Fossil Plant
51.3K lbs
14 Uss Gary Works
47.4K lbs
15 Clean Harbors Grassy Mountain LLC
46.8K lbs
16 Miller Steam Plant
36.9K lbs
17 Louisville Gas & Electric Co. - Trimble County Station
33.6K lbs
18 Louisville Gas & Electric Co. - Mill Creek Station
30.0K lbs
19 Clean Harbors Deer Park LLC
29.0K lbs
20 Prairie State Generating Co
28.2K lbs
21 American Electric Power H.w. Pirkey Power Plant
27.9K lbs
22 Jerritt Canyon Mine
22.7K lbs
23 Scherer Steam Electric Generating Plant
20.0K lbs
24 Colstrip Steam Electric Station
19.3K lbs
25 Vickery Environmental Inc.
19.2K lbs
26 Elemental Environmental Solutions LLC
9.2K lbs
27 Oceanagold Haile Gold Mine
7.7K lbs
28 Heidelberg Materials US Cement LLC
4.7K lbs
29 Duke Energy Florida Llc-Crystal River Power Plant
4.1K lbs
30 Gcc Rio Grande Inc
2.8K lbs
31 Giant Cement Co
332 lbs
32 Seward Power Plant
34 lbs

Frequently Asked Questions

What is Thallium Compounds in the EPA TRI? ▼
Thallium Compounds (EPA TRI Category Code: N760) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 32 facilities in the United States report releasing this chemical to the EPA.
How much Thallium Compounds is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 4.9M lbs of Thallium Compounds releases to the EPA Toxic Release Inventory across 32 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 Thallium Compounds? ▼
Thallium Compounds 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 Thallium Compounds? ▼
Nevada Gold Mines LLC - Carlin South Area in NV reports the largest disclosed release of Thallium Compounds in this dataset, at 2.5M lbs. Most reporting facilities for this chemical fall under metal mining. Release data is self-reported annually to the EPA under the TRI program. View the full list of 32 facilities on this page.
Why is Thallium Compounds listed under code N760 instead of a CAS number? ▼
N760 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, "Thallium Compounds" 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.

Related

Browse all → | Rankings →
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.