EPA TRI Chemical
Chloroform
CAS Number: 67-66-3
- Total releases
- 2.0M lbs
- Number of facilities
- 113
- Carcinogen
- Yes
- PBT substance
- No
According to the EPA Toxics Release Inventory, Chloroform (CAS 67-66-3) is disclosed by 113 Form R facilities totaling 2.0M 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.
Chloroform (CAS 67-66-3) 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 CHEMGENES CORP in MA at 547.8K 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
Chloroform: how the 2.0M lbs splits
2.0M lbs across all reported pathways
- Air Releases1.3M lbs64.6%
- Off-site Transfers591.8K lbs29.4%
- Land Disposal91.5K lbs4.5%
- Water Discharges30.1K lbs1.5%
Chloroform's 2.0M lbs Form-R total is MIXED, with air releases making up 64.6% of the bar. Next segment: off-site transfers at 29.4%.
Trend & Where It's Reported
Between 2019 and 2023, cumulative annual Chloroform releases across all reporting facilities increased by 13% (317.6K lbs → 358.8K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.
Reporting for Chloroform is dispersed: Massachusetts accounts for 22.7% of the reported total (4 facilities). Next: Louisiana.
- Massachusetts 457.1K lbs
- Louisiana 456.7K lbs
- Texas 319.5K lbs
- Ohio 152.3K lbs
- Florida 128.4K lbs
Reporting for Chloroform is highly concentrated by industry: Chemicals facilities account for 66.4% of the reported total (69 facilities). Next: Paper.
- Chemicals 1.3M lbs
- Paper 201.8K lbs
- Electric Utilities 194.0K lbs
- Food 121.5K lbs
- Chemical Wholesalers 78.2K lbs
Which facilities release the most of this chemical?
Facilities with the largest reported releases of Chloroform. Up to 50 shown.
Frequently Asked Questions
What is Chloroform in the EPA TRI? ▼
How much Chloroform is disclosed in U.S. TRI filings? ▼
How does EPA TRI classify Chloroform? ▼
Which facilities disclose the most Chloroform? ▼
What is the CAS number for Chloroform? ▼
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.
Related
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.