EPA TRI Chemical
Ozone
CAS Number: 10028-15-6
- Total releases
- 9.3M lbs
- Number of facilities
- 71
- Carcinogen
- No
- PBT substance
- No
According to the EPA Toxics Release Inventory, Ozone (CAS 10028-15-6) is disclosed by 71 Form R facilities totaling 9.3M lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.
Ozone (CAS 10028-15-6) 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.
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 CHARTER NEXT GENERATION - LEXINGTON in OH at 1.4M 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.
AIR pathway mix
Ozone: how the 9.3M lbs splits
9.3M lbs across all reported pathways
- Air Releases9.3M lbs100.0%
Ozone's 9.3M lbs Form-R total is AIR, with air releases making up 100.0% of the bar. Off-site transfers stay separate from air, water, and land releases.
Trend & Where It's Reported
Between 2019 and 2023, cumulative annual Ozone releases across all reporting facilities increased by 9% (1.8M lbs → 2.0M lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.
Reporting for Ozone is concentrated: Wisconsin accounts for 38.7% of the reported total (12 facilities). Next: Ohio.
- Wisconsin 3.6M lbs
- Ohio 1.7M lbs
- South Carolina 1.0M lbs
- Texas 866.3K lbs
- Indiana 864.2K lbs
Reporting for Ozone is highly concentrated by industry: Plastics and Rubber facilities account for 82.8% of the reported total (20 facilities). Next: Computers and Electronic Products.
- Plastics and Rubber 7.7M lbs
- Computers and Electronic Products 393.7K lbs
- Petroleum 362.6K lbs
- Paper 332.4K lbs
- Printing 278.8K lbs
Which facilities release the most of this chemical?
Facilities with the largest reported releases of Ozone. Up to 50 shown.
Frequently Asked Questions
What is Ozone in the EPA TRI? ▼
How much Ozone is disclosed in U.S. TRI filings? ▼
How does EPA TRI classify Ozone? ▼
Which facilities disclose the most Ozone? ▼
What is the CAS number for Ozone? ▼
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.
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.