PlainEnviro

EPA TRI Chemical

Chlorothalonil

CAS Number: 1897-45-6

Total releases
3.3M lbs
Number of facilities
45
Carcinogen
Yes
PBT substance
No
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Carcinogen

According to the EPA Toxics Release Inventory, Chlorothalonil (CAS 1897-45-6) is disclosed by 45 Form R facilities totaling 3.3M lbs of reported releases. The TRI extract marks this chemical with a carcinogen classification flag. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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Chlorothalonil (CAS 1897-45-6) 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.

The carcinogen flag above reflects an assessment from EPA, the International Agency for Research on Cancer, or the National Toxicology Program, not a TRI-specific determination. The largest individual disclosure in the current dataset comes from TM DEER PARK SERVICES LP in TX at 1.9M 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

Chlorothalonil: how the 3.3M lbs splits

3.3M lbs across all reported pathways

  • Land Disposal2.5M lbs75.8%
  • Off-site Transfers798.8K lbs23.9%
  • Air Releases10.6K lbs0.3%
  • Water Discharges66 lbs<0.1%

Chlorothalonil's 3.3M lbs Form-R total is LAND, with land disposal making up 75.8% of the bar. Next segment: off-site transfers at 23.9%.

Trend & Where It's Reported

Reported Release Trend

Between 2019 and 2023, cumulative annual Chlorothalonil releases across all reporting facilities decreased by 99% (2.5M lbs → 35.1K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Chlorothalonil is highly concentrated: Texas accounts for 70.1% of the reported total (4 facilities). Next: Michigan.

  • Texas 2.3M lbs
  • Michigan 436.0K lbs
  • Alabama 230.0K lbs
  • Louisiana 224.0K lbs
  • Arkansas 43.3K lbs
Industry Sources

Reporting for Chlorothalonil is highly concentrated by industry: Hazardous Waste facilities account for 76.7% of the reported total (11 facilities). Next: Other.

  • Hazardous Waste 2.6M lbs
  • Other 436.0K lbs
  • Chemicals 344.4K lbs
  • Wood Products 0 lbs
  • Petroleum Bulk Terminals 0 lbs

Which facilities release the most of this chemical?

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

# Facility Release (lbs)
1 Tm Deer Park Services LP
1.9M lbs
2 Eq Detroit Inc
436.0K lbs
3 Gb Biosciences LLC
285.2K lbs
4 Chemical Waste Management
230.0K lbs
5 Chemical Waste Management - la Ke Charles Facility
224.0K lbs
6 US Ecology Texas Inc
114.2K lbs
7 Gowan Milling Blytheville LLC
43.3K lbs
8 Clean Harbors Lone Mountain LLC Lone Mountain Facility
22.3K lbs
9 Tradebe Treatment & Recycling LLC
17.8K lbs
10 Tradebe Treatment & Recycling of Tn
11.4K lbs
11 Platte Chemical Co
7.3K lbs
12 Ibc Manufacturing Co
4.6K lbs
13 Agraform
2.1K lbs
14 Syngenta Crop Protection Llc-Omaha Plant
663 lbs
15 Contract Packaging Inc
515 lbs
16 Basf Corp
513 lbs
17 Helena Industries Inc
174 lbs
18 Makhteshim Agan of N.a. Inc. DBA Adama Ocilla Plan
40 lbs
19 Makhteshim Agan of N.a. Inc DBA Adama Vernon Wareh
20 lbs
20 Odom Industries Inc
10 lbs
21 Drexel Chemical Gw Warehouse Facility
7 lbs
22 Clean Harbors el Dorado LLC
1 lbs
23 Clean Harbors Aragonite LLC
0 lbs
24 Clean Harbors Deer Park LLC
0 lbs
25 Wilbur Ellis Woodburn
0 lbs
26 Wilbur Ellis Co LLC Rio Linda Hub
0 lbs
27 Henry Co
0 lbs
28 Gowan Milling LLC
0 lbs
29 Amvac Chemical
0 lbs
30 Doman Lumber
0 lbs
31 Albaugh Inc.
0 lbs
32 Tri-Rinse Inc
0 lbs
33 Manly Terminal LLC
0 lbs
34 Certainteed Ceilings Corp
0 lbs
35 Ufp Tampa LLC
0 lbs
36 Micro Chem Co LLC
0 lbs
37 Cjb Industries Inc. Gh Plant
0 lbs
38 Cjb Industries Inc Cs Plant
0 lbs
39 Ufp Union City LLC
0 lbs
40 Koppers Performance Chemicals Inc
0 lbs
41 Ascent Chemicals
0 lbs
42 Ufp Salisbury LLC
0 lbs
43 Ufp Stockertown LLC
0 lbs
44 Custom Processing Services LLC
0 lbs
45 Lebanon Seaboard Corp
0 lbs

Frequently Asked Questions

What is Chlorothalonil in the EPA TRI? ▼
Chlorothalonil (CAS Number: 1897-45-6) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. The TRI extract marks it with a carcinogen classification flag based on EPA/IARC/NTP listings. 45 facilities in the United States report releasing this chemical to the EPA.
How much Chlorothalonil is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 3.3M lbs of Chlorothalonil releases to the EPA Toxic Release Inventory across 45 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 Chlorothalonil? ▼
Chlorothalonil carries a carcinogen classification flag in the TRI database (drawn from EPA, IARC, or NTP listings). 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 Chlorothalonil? ▼
Tm Deer Park Services LP in TX reports the largest disclosed release of Chlorothalonil in this dataset, at 1.9M 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 45 facilities on this page.
What is the CAS number for Chlorothalonil? ▼
The CAS (Chemical Abstracts Service) Registry Number for Chlorothalonil is 1897-45-6. 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
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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

Carcinogen Classification: This chemical is classified as a known or suspected carcinogen by the EPA under the Toxic Release Inventory program. This classification is based on evaluations by agencies including the International Agency for Research on Cancer (IARC), the National Toxicology Program (NTP), and the EPA itself.

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.