EPA TRI Facility · Primary Metals
Nucor Steel Connecticut
Wallingford, CT · Parent: Nucor Corp
- Total releases
- 1.2K lbs
- Chemicals reported
- 8
- Carcinogens
- 1
- Primary pathway
- Off-site Transfers
OFFSITE Form-R mix
Nucor Steel Connecticut: how the 1.4K lbs splits
1.4K lbs across all reported pathways
- Off-site Transfers 1.3K lbs 97.5%
- Water Discharges 35 lbs 2.5%
- Air Releases 0 lbs <0.1%
- Land Disposal 0 lbs <0.1%
Nucor Steel Connecticut's 1.4K lbs Form-R total is OFFSITE - off-site transfers is 97.5% of the bar. Next segment: water discharges at 2.5%. Leading chemical by pounds: Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region).
Carcinogen-classified pounds vs other reported pounds
Same cumulative TRI total as above, split by EPA/IARC carcinogen classification on each chemical: pounds share, not chemical count. Classification is not a site health-risk score.
LIGHT volume OFFSITE pathway CARC-LEAN
Nucor Steel Connecticut is an EPA Toxics Release Inventory reporter in Wallingford, CT, in the primary metals sector. It reported 150 lbs of releases across 4 chemicals in 2024, and 1.2K lbs in total across its 2019-2024 reporting years. That ranks 13,574 of 25,986 TRI facilities nationwide by cumulative reported pounds, counting each facility over however many years it has filed. In Connecticut's 240 reporting TRI sites, pounds #1 is not chemical-count #1. Nucor Steel Connecticut is pounds #138 and chemical-count #18 at 1.2K lbs. Clean Harbors of Connecticut Inc leads reported pounds (1.5M lbs) at 15 chemicals (chemical-count #2). Allnex USA Inc. Wallingford Ct Site leads chemical count at 19 chemicals (436.7K lbs, pounds #3). Reported volume fell against 2022. Pounds reported are not a measure of toxicity or health risk. Nearest other TRI reporters: Ametek Specialty Metal Products Div; Ulbrich Wire Inc; Parker Hannifin Advanced Products; Allnex USA Inc. Wallingford Ct Site. Similar-scale Primary Metals peers outside Connecticut: Prysmian Cables & Systems USA LLC; Bruker Ost LLC; Port City Die Cast; Smith Foundry Co. Other Nucor Corp sites in this extract: Nucor Steel-Berkeley; Nucor Steel Tuscaloosa Inc; Nucor Steel; Nucor Steel Hertford County. Largest disclosed chemicals by pounds: Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region); Chromium compounds (except for chromite ore mined in the Transvaal Region); Manganese compounds; Manganese And Manganese Compounds.
Nucor Steel Connecticut stamps LIGHT volume with a dominant OFFSITE pathway (97.5% off-site transfers) across 8 chemicals · 1 carcinogen-classified. Cumulative Form-R extract: 1.2K lbs (2019–2024). All figures are self-reported EPCRA §313 estimates, not measured stack emissions or a health-risk score. Scale peers include Prysmian Cables & Systems USA LLC and Bruker Ost LLC.
Nucor Steel Connecticut vs. every reporting TRI facility
Cumulative reported release pounds, with this facility marked in the national distribution
1.2K lbs 48th percentile higher than 48% of 25,986 reporting TRI facilities
Each bar is a $1M-wide band; taller bars hold more reporting TRI facilities. The dashed line and filled bar mark this facility. Hover, focus, or tap a bar for its full count, share, and position.
Source U.S. Environmental Protection Agency, Toxics Release Inventory · 2023 reporting year
Nucor Steel Connecticut in the Primary Metals sector extract
Among the 1,603 Primary Metals facilities in this database, Nucor Steel Connecticut reports the 1,001st-largest volume (1.2K lbs). Scale peers outside Connecticut include Prysmian Cables & Systems USA LLC and Bruker Ost LLC.
Sector rank uses reported TRI pounds only. Share callouts need ≥1,000 lbs so tiny totals cannot mint a false signal.
Annual disclosure change
What changed: EPA TRI 2023 reporting year
- Nucor Steel Connecticut's total reported releases fell from 216 lb in 2022 to 164 lb in 2023, based on EPA TRI filings.
- Nucor Steel Connecticut's off-site transfers fell from 214 lb in 2022 to 161 lb in 2023, based on EPA TRI filings.
Nucor Steel Connecticut Form-R facts
Compare this facility
See how Nucor Steel Connecticut stacks up against nearby facilities and the typical reporter.
99% less than the comparison
About the same as the comparison
Comparison reflects reported pounds and chemical counts, not toxicity or health risk. Averages cover facilities reporting any release.
How does this facility release toxic chemicals?
How Nucor Steel Connecticut releases toxic chemicals into the environment. Total: 1.4K lbs.
Emissions Trend Summary
From 2019 to 2024, total releases decreased by 71% (519 lbs to 150 lbs).
Nucor Steel Connecticut: annual Form-R pounds
LIGHT site · OFFSITE pathway · TRI years 2019–2024
- 2019 0
- 2020 0
- 2021 0
- 2022 0
- 2023 0
- 2024 0
What this shows Nucor Steel Connecticut year-over-year reported totals (decreased by 71% from 2019 to 2024). TRI figures are self-reported estimates and can swing with production, waste handling, and reporting changes, not only with controls. Lead chemical in the extract: Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region).
| Year | Total | Chemicals |
|---|---|---|
| 2019 | 519 lbs | 5 |
| 2020 | 101 lbs | 5 |
| 2021 | 226 lbs | 5 |
| 2022 | 216 lbs | 4 |
| 2023 | 164 lbs | 4 |
| 2024 | 150 lbs | 4 |
Chemical Releases
Aggregated across all reporting years (2019–2024). 1 of 8 chemicals are carcinogens. Sorted by total release volume.
| Chemical | Total | Flags |
|---|---|---|
| Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) | 396 lbs | - |
| Chromium compounds (except for chromite ore mined in the Transvaal Region) | 331 lbs | - |
| Manganese compounds | 256 lbs | - |
| Manganese And Manganese Compounds | 208 lbs | - |
| Lead compounds | 92 lbs | - |
| Copper | 59 lbs | - |
| Nickel compounds | 24 lbs | Carcinogen |
| Lead And Lead Compounds | 12 lbs | - |
Nucor Steel Connecticut · OFFSITE-pathway site
Nearest TRI Facilities to Nucor Steel Connecticut
Closest other reporters in Connecticut - including Ametek Specialty Metal Products Div, Ulbrich Wire Inc, Parker Hannifin Advanced Products, ordered by distance.
Showing 8 of 239 other reporting facilities in Connecticut.
Similar Primary Metals Facilities
Other Primary Metals facilities with similar total release volumes (±80%), outside Connecticut - e.g. Prysmian Cables & Systems USA LLC, Bruker Ost LLC, Port City Die Cast.
Compare beyond Connecticut
Nationwide peers by reported pounds & chemical count
Cross-state TRI reporters nearest Nucor Steel Connecticut on cumulative reported pounds (1.2K lbs) and distinct chemical count (8). Release-pound peers include Etched LLC, Virginia Concrete Falls Church Plant, Chemsico. Chemical-count peers include Prepa-South Coast Power Plant, Argos Puerto Rico Corp., US Tsubaki Automotive LLC. Neighborhoods are forced disjoint so each axis surfaces a different set of sites.
Similar reported release pounds
Nearest out-of-state reporters (≥1,000 lbs) by absolute TRI pounds, not same-industry or same-county neighbors.
- Etched LLC Kansas City, MO · Fabricated Metals 1.2K lbs reported
- Virginia Concrete Falls Church Plant Falls Church, VA · Nonmetallic Mineral Product 1.2K lbs reported
- Chemsico Saint Louis, MO · Chemicals 1.2K lbs reported
- Spectrum Decorative Finishes Inc Grand Rapids, MI · Transportation Equipment 1.2K lbs reported
Similar chemical count
Nearest out-of-state reporters by distinct Form-R chemicals (deduped against the release-pound neighborhood).
Other Nucor Corp Facilities
Same-parent TRI sites ranked by reported releases - including Nucor Steel-Berkeley, Nucor Steel Tuscaloosa Inc, Nucor Steel.
About TRI Data
Data as of 2023 reporting year. Source: U.S. Environmental Protection Agency (EPA) Toxic Release Inventory.
On this page the largest disclosed chemicals include Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region), Chromium compounds (except for chromite ore mined in the Transvaal Region), Manganese compounds, Manganese And Manganese Compounds; nearby reporters include Ametek Specialty Metal Products Div. Nucor Steel Connecticut stamps LIGHT volume · OFFSITE pathway · CARC-LEAN carcinogen-lbs on this Form-R extract. Totals are self-reported estimates under EPCRA §313, not measured stack emissions or a health-risk score.
Use and verify this record
This Nucor Steel Connecticut TRI extract (LIGHT · OFFSITE · CARC-LEAN · lead Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)) joins EPA Form-R filings with facility identity - reported pounds, not a health-risk rating.
Nucor Steel Connecticut totals are self-reported EPCRA §313 estimates for Wallingford, CT, latest year 2023. Form-R rows span 2019–2024 (6 years). NAICS 331110 · Primary Metals. 0.1% of New Haven TRI pounds in this extract. Nearest ABS peer: Etched LLC (Δ 1 lbs). Pounds ≠ exposure.
Nucor Steel Connecticut stamps LIGHT volume · OFFSITE pathway · CARC-LEAN · lead Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region). PlainEnviro renders this EPA Form-R extract from its pipeline; no figure is typed in by an editor. Corrections: editorial policy.
All federal data sources used on this page
- EPA Toxics Release Inventory (TRI) Basic Data Files - annual self-reported chemical-release filings. epa.gov
- EPA TRI Program reference - how chemicals and reported releases are counted. epa.gov
- EPA Facility Registry Service - facility location and identity. epa.gov
- EPA ECHO - regulatory and compliance context. epa.gov
- EPA Envirofacts - the EPA data warehouse exposing these datasets. epa.gov