EPA TRI Chemical
Diuron
CAS Number: 330-54-1
- Total releases
- 59.0K lbs
- Number of facilities
- 30
- Carcinogen
- No
- PBT substance
- No
According to the EPA Toxics Release Inventory, Diuron (CAS 330-54-1) is disclosed by 30 Form R facilities totaling 59.0K lbs of reported releases. TRI pounds are self-reported disclosure totals, not a measured public-health risk score.
Diuron (CAS 330-54-1) 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 TROY CHEMICAL CORP in NJ at 33.6K 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
Diuron: how the 59.0K lbs splits
59.0K lbs across all reported pathways
- Off-site Transfers58.1K lbs98.5%
- Air Releases694 lbs1.2%
- Water Discharges165 lbs0.3%
- Land Disposal0 lbs<0.1%
Diuron's 59.0K lbs Form-R total is OFFSITE, with off-site transfers making up 98.5% of the bar. Next segment: air releases at 1.2%.
Trend & Where It's Reported
Between 2019 and 2023, cumulative annual Diuron releases across all reporting facilities increased by 13% (1.6K lbs → 1.8K lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.
Reporting for Diuron is highly concentrated: New Jersey accounts for 57.0% of the reported total (1 facility). Next: Indiana.
- New Jersey 33.6K lbs
- Indiana 20.5K lbs
- Iowa 2.1K lbs
- Pennsylvania 776 lbs
- California 719 lbs
Reporting for Diuron is highly concentrated by industry: Chemicals facilities account for 65.3% of the reported total (27 facilities). Next: Hazardous Waste.
- Chemicals 38.5K lbs
- Hazardous Waste 20.5K lbs
- Transportation Equipment 0 lbs
Which facilities release the most of this chemical?
Facilities with the largest reported releases of Diuron. Up to 50 shown.
Frequently Asked Questions
What is Diuron in the EPA TRI? ▼
How much Diuron is disclosed in U.S. TRI filings? ▼
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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.
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.