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EPA TRI Chemical

Barium and Barium Compounds

EPA TRI Category Code: N040

Total releases
316.2M lbs
Number of facilities
509
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, Barium and Barium Compounds (EPA TRI Category Code N040) is disclosed by 509 Form R facilities totaling 316.2M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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Barium and Barium Compounds (EPA TRI Category Code N040) 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 71.3M 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

Barium and Barium Compounds: how the 316.2M lbs splits

316.2M lbs across all reported pathways

  • Land Disposal223.8M lbs70.8%
  • Off-site Transfers87.9M lbs27.8%
  • Water Discharges2.9M lbs0.9%
  • Air Releases1.6M lbs0.5%

Barium and Barium Compounds's 316.2M lbs Form-R total is LAND, with land disposal making up 70.8% of the bar. Next segment: off-site transfers at 27.8%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Barium and Barium Compounds releases across all reporting facilities increased by 68% (46.4M lbs → 77.9M lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Barium and Barium Compounds is concentrated: North Dakota accounts for 30.4% of the reported total (8 facilities). Next: Montana.

  • North Dakota 96.3M lbs
  • Montana 26.6M lbs
  • Wyoming 25.1M lbs
  • Michigan 14.5M lbs
  • Iowa 13.1M lbs
Industry Sources

Reporting for Barium and Barium Compounds is highly concentrated by industry: Electric Utilities facilities account for 89.2% of the reported total (191 facilities). Next: Hazardous Waste.

  • Electric Utilities 282.1M lbs
  • Hazardous Waste 7.2M lbs
  • Primary Metals 6.4M lbs
  • Chemicals 4.9M lbs
  • Paper 4.2M lbs

Which facilities release the most of this chemical?

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

# Facility Release (lbs)
1 Basin Electric Antelope Valley Station
71.3M lbs
2 Colstrip Steam Electric Station
25.7M lbs
3 Minnkota Power Cooperative Inc. Milton R. Young Station
18.1M lbs
4 Basin Electric Laramie River Station
10.9M lbs
5 Midamerican Energy Co Walter Scott Jr Energy Center
7.5M lbs
6 Xcel Energy Sherburne County Generating Plant
6.0M lbs
7 Dte Electric Co - Monroe Power Plant
5.9M lbs
8 Basin Electric Dry Fork Station
4.4M lbs
9 Black Hills Corp - Neil Simpson Complex
3.7M lbs
10 Plum Point Energy Station
3.6M lbs
11 Gavin Power LLC
3.6M lbs
12 Coal Creek Station
3.3M lbs
13 J H Campbell Generating Plant
3.3M lbs
14 Nearman Creek Power Station
3.3M lbs
15 U.S. Tva Shawnee Fossil Plant
3.2M lbs
16 Jeffrey Energy Center
2.8M lbs
17 Miller Steam Plant
2.8M lbs
18 Basin Electric Leland Olds Station
2.8M lbs
19 Public Service Co of Colorado Comanche Station
2.8M lbs
20 Prairie State Generating Co
2.7M lbs
21 American Electric Power Welsh Plant
2.5M lbs
22 Four Corners Steam Electric Station
2.5M lbs
23 Pacificorp Dave Johnston Plant
2.5M lbs
24 Columbia Energy Center
2.4M lbs
25 U.S. Tva Gallatin Fossil Plant
2.4M lbs
26 Midamerican Energy-Louisa Generating Station
2.2M lbs
27 Harrison Power Station
2.1M lbs
28 Sandy Creek Energy Station
2.0M lbs
29 Pacificorp Hunter Plant
1.9M lbs
30 Adm Corn Processing
1.9M lbs
31 La Cygne Generating Station
1.8M lbs
32 Saint Nicholas Cogeneration Project
1.8M lbs
33 Ameren Missouri Labadie Energy Center
1.8M lbs
34 Iatan Generating Station
1.7M lbs
35 Pacificorp Jim Bridger Plant & Bridger Coal Co
1.7M lbs
36 Choctaw Generation LP L.l.l.p.
1.6M lbs
37 Public Service Co of Colorado Hayden Station
1.6M lbs
38 Public Service Co of Colorado Pawnee Station
1.6M lbs
39 Scherer Steam Electric Generating Plant
1.6M lbs
40 Rausch Creek Generation LLC
1.5M lbs
41 Aes Puerto Rico LP
1.3M lbs
42 Longview Power
1.3M lbs
43 Dte Electric Co-Belle River Power Plant
1.3M lbs
44 Newton Energy Center
1.3M lbs
45 Gopher Resource LLC
1.3M lbs
46 Pacificorp Wyodak Plant
1.2M lbs
47 Hecla Ltd Lucky Friday Mine Unit
1.2M lbs
48 Gilberton Power Co
1.2M lbs
49 Trapper Mining Inc.
1.2M lbs
50 Buick Resource Recycling Facility LLC
1.2M lbs

Frequently Asked Questions

What is Barium and Barium Compounds in the EPA TRI? ▼
Barium and Barium Compounds (EPA TRI Category Code: N040) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 509 facilities in the United States report releasing this chemical to the EPA.
How much Barium and Barium Compounds is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 316.2M lbs of Barium and Barium Compounds releases to the EPA Toxic Release Inventory across 509 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 Barium and Barium Compounds? ▼
Barium and Barium 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 Barium and Barium Compounds? ▼
Basin Electric Antelope Valley Station in ND reports the largest disclosed release of Barium and Barium Compounds in this dataset, at 71.3M lbs. Most reporting facilities for this chemical fall under electric utilities. Release data is self-reported annually to the EPA under the TRI program. View the full list of 509 facilities on this page.
Why is Barium and Barium Compounds listed under code N040 instead of a CAS number? ▼
N040 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, "Barium and Barium 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.

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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.