PlainEnviro

EPA TRI Chemical

Perfluorooctanoic Acid

CAS Number: 335-67-1

Total releases
40.8K lbs
Number of facilities
30
Carcinogen
Yes
PBT substance
No
Verify at EPA TRI →
Carcinogen

According to the EPA Toxics Release Inventory, Perfluorooctanoic Acid (CAS 335-67-1) is disclosed by 30 Form R facilities totaling 40.8K 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.

View saved records

Perfluorooctanoic Acid (CAS 335-67-1) 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 US ECOLOGY NEVADA INC. in NV at 13.9K 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

Perfluorooctanoic Acid: how the 40.8K lbs splits

40.8K lbs across all reported pathways

  • Land Disposal28.1K lbs69.0%
  • Off-site Transfers12.5K lbs30.7%
  • Air Releases136 lbs0.3%
  • Water Discharges9 lbs<0.1%

Perfluorooctanoic Acid's 40.8K lbs Form-R total is MIXED, with land disposal making up 69.0% of the bar. Next segment: off-site transfers at 30.7%.

Trend & Where It's Reported

Reported Release Trend

Between 2020 and 2023, cumulative annual Perfluorooctanoic Acid releases across all reporting facilities decreased by 19% (12.3K lbs → 10.0K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Perfluorooctanoic Acid is concentrated: Nevada accounts for 33.9% of the reported total (1 facility). Next: Texas.

  • Nevada 13.9K lbs
  • Texas 13.1K lbs
  • Idaho 8.9K lbs
  • Alabama 3.4K lbs
  • Ohio 808 lbs
Industry Sources

Reporting for Perfluorooctanoic Acid is highly concentrated by industry: Hazardous Waste facilities account for 69.1% of the reported total (12 facilities). Next: Other.

  • Hazardous Waste 28.2K lbs
  • Other 11.7K lbs
  • Chemicals 882 lbs
  • Computers and Electronic Products 0 lbs
  • Plastics and Rubber 0 lbs

Which facilities release the most of this chemical?

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

# Facility Release (lbs)
1 US Ecology Nevada Inc.
13.9K lbs
2 U.S. Army Red River Army Depot
11.4K lbs
3 US Ecology Idaho Inc.
8.9K lbs
4 Chemical Waste Management
3.4K lbs
5 Tm Deer Park Services LP
909 lbs
6 Vickery Environmental Inc.
644 lbs
7 US Ecology Texas Inc
516 lbs
8 Ineos Styrolution America LLC
233 lbs
9 Synthomer Inc.
210 lbs
10 Diversey
189 lbs
11 Eq Detroit Inc
180 lbs
12 Hydrodec of N.a. LLC
161 lbs
13 US Naval Station Everett
124 lbs
14 3M Chemical Operations' Cottage Grove Facility
90 lbs
15 Heritage Thermal Services
4 lbs
16 Veolia Es Technical Solutions LLC Port Arthur Facility
1 lbs
17 Clean Harbors Deer Park LLC
0 lbs
18 Clean Harbors el Dorado LLC
0 lbs
19 Basf Corp - Freeport Site
0 lbs
20 3M Chemical Operations' Cordova Facility
0 lbs
21 Clean Harbors Aragonite LLC
0 lbs
22 Skywater Technology Foundry Inc
0 lbs
23 Exfluor Research
0 lbs
24 Univar Solutions Geismar Ge
0 lbs
25 Shac Catalyst Plant
0 lbs
26 Crane Composites Inc.
0 lbs
27 Hydrite Chemical Co.
0 lbs
28 Ross Incineration Services Inc
0 lbs
29 Southern Industrial Chemicals Inc.
0 lbs
30 U.S. Dod Dfsp Charleston
0 lbs
31 United Refining Co
0 lbs

Frequently Asked Questions

What is Perfluorooctanoic Acid in the EPA TRI? ▼
Perfluorooctanoic Acid (CAS Number: 335-67-1) 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. 30 facilities in the United States report releasing this chemical to the EPA.
How much Perfluorooctanoic Acid is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 40.8K lbs of Perfluorooctanoic Acid releases to the EPA Toxic Release Inventory across 30 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 Perfluorooctanoic Acid? ▼
Perfluorooctanoic Acid 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 Perfluorooctanoic Acid? ▼
US Ecology Nevada Inc. in NV reports the largest disclosed release of Perfluorooctanoic Acid in this dataset, at 13.9K 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 30 facilities on this page.
What is the CAS number for Perfluorooctanoic Acid? ▼
The CAS (Chemical Abstracts Service) Registry Number for Perfluorooctanoic Acid is 335-67-1. 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
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

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

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.