EPA TRI Chemical
Nickel Compounds
EPA TRI Category Code: N495
- Total releases
- 46.5M lbs
- Number of facilities
- 1,039
- Carcinogen
- Yes
- PBT substance
- No
According to the EPA Toxics Release Inventory, Nickel Compounds (EPA TRI Category Code N495) is disclosed by 1,039 Form R facilities totaling 46.5M 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.
Nickel Compounds (EPA TRI Category Code N495) 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 RED DOG OPERATIONS in AK at 6.8M 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
Nickel Compounds: how the 46.5M lbs splits
46.5M lbs across all reported pathways
- Land Disposal30.2M lbs64.9%
- Off-site Transfers15.7M lbs33.8%
- Air Releases451.9K lbs1.0%
- Water Discharges140.2K lbs0.3%
Nickel Compounds's 46.5M lbs Form-R total is MIXED, with land disposal making up 64.9% of the bar. Next segment: off-site transfers at 33.8%.
Trend & Where It's Reported
Between 2019 and 2023, cumulative annual Nickel Compounds releases across all reporting facilities decreased by 45% (13.2M lbs → 7.2M lbs). Year-to-year swings reflect facility openings/closures and reporting changes as much as underlying activity.
Reporting for Nickel Compounds is dispersed: Alaska accounts for 17.7% of the reported total (4 facilities). Next: Kentucky.
- Alaska 8.2M lbs
- Kentucky 3.8M lbs
- Ohio 2.8M lbs
- Nevada 2.7M lbs
- Illinois 2.6M lbs
Reporting for Nickel Compounds is concentrated by industry: Electric Utilities facilities account for 28.8% of the reported total (124 facilities). Next: Metal Mining.
- Electric Utilities 13.4M lbs
- Metal Mining 12.1M lbs
- Primary Metals 7.0M lbs
- Chemicals 4.8M lbs
- Hazardous Waste 4.0M lbs
Which facilities release the most of this chemical?
Facilities with the largest reported releases of Nickel Compounds. Up to 50 shown.
Frequently Asked Questions
What is Nickel Compounds in the EPA TRI? ▼
How much Nickel Compounds is disclosed in U.S. TRI filings? ▼
How does EPA TRI classify Nickel Compounds? ▼
Which facilities disclose the most Nickel Compounds? ▼
Why is Nickel Compounds listed under code N495 instead of a CAS number? ▼
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.