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EPA TRI Chemical

Perfluorooctane Sulfonic Acid

CAS Number: 1763-23-1

Total releases
83.8K lbs
Number of facilities
20
Carcinogen
No
PBT substance
No
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According to the EPA Toxics Release Inventory, Perfluorooctane Sulfonic Acid (CAS 1763-23-1) is disclosed by 20 Form R facilities totaling 83.8K lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.

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Perfluorooctane Sulfonic Acid (CAS 1763-23-1) 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.

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 CYCLE CHEM INC. in NJ at 63.9K 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.

OFFSITE pathway mix

Perfluorooctane Sulfonic Acid: how the 83.8K lbs splits

83.8K lbs across all reported pathways

  • Off-site Transfers62.8K lbs75.0%
  • Land Disposal21.0K lbs25.0%
  • Water Discharges1 lbs<0.1%
  • Air Releases0 lbs<0.1%

Perfluorooctane Sulfonic Acid's 83.8K lbs Form-R total is OFFSITE, with off-site transfers making up 75.0% of the bar. Next segment: land disposal at 25.0%.

Trend & Where It's Reported

Reported Release Trend

Between 2020 and 2023, cumulative annual Perfluorooctane Sulfonic Acid releases across all reporting facilities increased by 3693% (844 lbs → 32.0K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.

Geographic Concentration

Reporting for Perfluorooctane Sulfonic Acid is highly concentrated: New Jersey accounts for 73.9% of the reported total (1 facility). Next: Louisiana.

  • New Jersey 61.9K lbs
  • Louisiana 8.5K lbs
  • Idaho 7.6K lbs
  • Alabama 4.8K lbs
  • Michigan 476 lbs
Industry Sources

Reporting for Perfluorooctane Sulfonic Acid is highly concentrated by industry: Hazardous Waste facilities account for 99.1% of the reported total (10 facilities). Next: Petroleum.

  • Hazardous Waste 83.0K lbs
  • Petroleum 445 lbs
  • Chemicals 194 lbs
  • Other 143 lbs
  • Fabricated Metals 0 lbs

Which facilities release the most of this chemical?

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

# Facility Release (lbs)
1 Cycle Chem Inc.
63.9K lbs
2 Chemical Waste Management - la Ke Charles Facility
7.9K lbs
3 US Ecology Idaho Inc.
7.6K lbs
4 Chemical Waste Management
4.8K lbs
5 Wayne Disposal Inc
476 lbs
6 Marathon Petroleum Co LP
445 lbs
7 Valicor Environmental Services LLC
287 lbs
8 US Army Fort Campbell
143 lbs
9 Championx-Scott
113 lbs
10 3M Chemical Operations' Cottage Grove Facility
77 lbs
11 Basf Corp - Freeport Site
5 lbs
12 Clean Harbors el Dorado LLC
0 lbs
13 3M Chemical Operations' Cordova Facility
0 lbs
14 Clean Harbors Environmental Services Inc
0 lbs
15 US Navy Nas Whidbey Island Ault Field
0 lbs
16 Nexeo Solutions Llc-Clearfield
0 lbs
17 Veolia Es Technical Solutions LLC Port Arthur Facility
0 lbs
18 Sopus Products
0 lbs
19 Bronson Plating Co
0 lbs
20 Ross Incineration Services Inc
0 lbs

Frequently Asked Questions

What is Perfluorooctane Sulfonic Acid in the EPA TRI? ▼
Perfluorooctane Sulfonic Acid (CAS Number: 1763-23-1) is a chemical tracked by the EPA Toxic Release Inventory (TRI) program. It is not marked as a carcinogen in the TRI classification set. 20 facilities in the United States report releasing this chemical to the EPA.
How much Perfluorooctane Sulfonic Acid is disclosed in U.S. TRI filings? ▼
U.S. facilities have reported a total of 83.8K lbs of Perfluorooctane Sulfonic Acid releases to the EPA Toxic Release Inventory across 20 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 Perfluorooctane Sulfonic Acid? ▼
Perfluorooctane Sulfonic Acid 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 Perfluorooctane Sulfonic Acid? ▼
Cycle Chem Inc. in NJ reports the largest disclosed release of Perfluorooctane Sulfonic Acid in this dataset, at 63.9K 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 20 facilities on this page.
What is the CAS number for Perfluorooctane Sulfonic Acid? ▼
The CAS (Chemical Abstracts Service) Registry Number for Perfluorooctane Sulfonic Acid is 1763-23-1. 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

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How to Check Environmental Quality
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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.