Steel Dynamics Inc
19 facilities · 10 states · 8.0M lbs total releases
According to the EPA Toxics Release Inventory, Steel Dynamics Inc is the reported parent of 19 Form R facilities across 10 states, disclosing 8.0M lbs of toxic releases. 11 of 164 reported chemicals carry a carcinogen classification in the TRI extract. The heaviest-reporting state by release volume is Indiana (6.3M lbs). Those TRI figures remain self-reported disclosure pounds for Steel Dynamics Inc, including carcinogen-flagged substances, not a measured public-health risk score.
Release-over-release change
What changed for Steel Dynamics Inc: EPA TRI 2023 reporting year
Same facilities, both years
-21.5%
19 facilities that filed in 2022 and 2023
Whole inventory
-21.5%
1.5 million lb → 1.2 million lb, every facility that filed
- Steel Dynamics Inc's total reported releases fell from 1.5 million lb in 2022 to 1.2 million lb in 2023, based on EPA TRI filings.
- Steel Dynamics Inc's water releases rose from 2.3 thousand lb in 2022 to 3.5 thousand lb in 2023, based on EPA TRI filings.
- Steel Dynamics Inc's off-site transfers fell from 1.2 million lb in 2022 to 895.6 thousand lb in 2023, based on EPA TRI filings.
- Steel Dynamics Inc's air releases fell from 314.4 thousand lb in 2022 to 288.7 thousand lb in 2023, based on EPA TRI filings.
TRI parent disclosure trail
Read Steel Dynamics Inc from filing to facility
Largest Form R sites under this parent: Steel Dynamics Inc-Flat Roll Div; Steel Dynamics Inc-Engineered Bar Products Div; Steel Dynamics Inc Flat Roll Group Columbus Div; Sdi Lafarga LLC. Neighbor parents on the disclosure ladder: Cleveland-Cliffs Inc; US Steel Corp; Bp America Inc. Largest disclosed chemicals by pounds: Zinc compounds; Manganese compounds; Certain glycol ethers; Copper And Copper Compounds; Manganese And Manganese Compounds. Heaviest-reporting states in this extract: Indiana; Mississippi; Virginia. Industry labels on the parent rollup: Primary Metals; Fabricated Metals. Start from those named sites and neighbors rather than a generic parent blurb; pounds stay disclosure, not risk.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files Toxics Release Inventory (TRI) · August 2026
Largest Form R sites under this parent: Steel Dynamics Inc-Flat Roll Div; Steel Dynamics Inc-Engineered Bar Products Div; Steel Dynamics Inc Flat Roll Group Columbus Div; Sdi Lafarga LLC. Neighbor parents on the disclosure ladder: Cleveland-Cliffs Inc; US Steel Corp; Bp America Inc. Largest disclosed chemicals by pounds: Zinc compounds; Manganese compounds; Certain glycol ethers; Copper And Copper Compounds; Manganese And Manganese Compounds. Heaviest-reporting states in this extract: Indiana; Mississippi; Virginia. Industry labels on the parent rollup: Primary Metals; Fabricated Metals.
Steel Dynamics Inc ranks #188 of 4,988 slug-merged TRI parents by disclosed release pounds, mid-to-upper among parents, not a top-25 volume name. Steel Dynamics Inc spans 10 states in this extract, placing it among the broader national TRI parent footprints. Steel Dynamics Inc's disclosed pounds are spread across 19 facilities, no single site dominates the parent total in this extract.
Parent aggregation for Steel Dynamics Inc follows facility-reported names. Compare the named neighbors (Cleveland-Cliffs Inc; US Steel Corp; Bp America Inc) before treating rank as a hazard score; TRI stays self-reported and unweighted by toxicity.
Where Steel Dynamics Inc sits among TRI parents
Steel Dynamics Inc sits on a disclosure ladder beside Cleveland-Cliffs Inc and US Steel Corp and Bp America Inc. Open those parents for a different facility count, state span, and chemical mix.
Higher disclosed volume
- Cleveland-Cliffs Inc · rank #186 · 131.7M lbs
- US Steel Corp · rank #187 · 79.2M lbs
Lower disclosed volume
- Bp America Inc · rank #189 · 7.6M lbs
Largest chemicals disclosed by Steel Dynamics Inc
Zinc compounds; Manganese compounds; Certain glycol ethers; Copper And Copper Compounds; Manganese And Manganese Compounds lead the Form R pound rollup for this parent, including filings such as Steel Dynamics Inc-Flat Roll Div. Pound totals, not toxicity-weighted risk.
| Chemical | Disclosed lbs |
|---|---|
| Zinc compounds | 3.7M lbs |
| Manganese compounds | 1.6M lbs |
| Certain glycol ethers | 554.1K lbs |
| Copper And Copper Compounds | 456.4K lbs |
| Manganese And Manganese Compounds | 237.3K lbs |
Where does this company operate?
| State | Facilities | Total Releases |
|---|---|---|
| Indiana | 7 | 6.3M lbs |
| Mississippi | 1 | 972.0K lbs |
| Virginia | 2 | 216.7K lbs |
| Florida | 1 | 167.0K lbs |
| West Virginia | 1 | 158.8K lbs |
| Arkansas | 1 | 119.1K lbs |
| Texas | 1 | 28.6K lbs |
| Nevada | 1 | 2.3K lbs |
| Pennsylvania | 3 | 822 lbs |
| Alabama | 1 | 37 lbs |
Facilities (19)
Frequently Asked Questions
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Compare beyond the release ladder
Nationwide peers by disclosed pounds & facility count
Cross-portfolio TRI parents nearest Steel Dynamics Inc on total disclosed release pounds (8.0M lbs) and reporting facility count (19). Release-volume peers include Azz Inc, Billerud Americas Corp, Usg Corp. Facility-count peers include Anheuser-Busch Cos LLC, Ecolab Inc, Gcc of America. Neighborhoods are forced disjoint so each axis surfaces a different set of parents.
Similar disclosed release pounds
Nearest parents (≥3 facilities, ≥10k lbs) by absolute TRI disclosed pounds, not rank-adjacent ladder neighbors.
Similar facility count
Nearest parents by reporting-site count (deduped against the release-pound neighborhood).
About This Data
EPA TRI parent totals cover all media. This extract's heaviest states for the parent are Indiana, Mississippi, Virginia; facility-reported names can vary across subsidiaries.
Source: U.S. Environmental Protection Agency, TRI Basic Data Files
What to do with Steel Dynamics Inc's TRI parent record
From Steel Dynamics Inc, open Steel Dynamics Inc-Flat Roll Div or compare against Cleveland-Cliffs Inc rather than reading rank alone.
- Open the largest Form R site for Steel Dynamics Inc (Steel Dynamics Inc-Flat Roll Div in IN). Largest facility
- Compare against US Steel Corp, the next-higher disclosed-volume parent. Higher-volume parent
- Browse the full parent release ranking to see where Steel Dynamics Inc sits among all slug-merged TRI parents. All parent companies
Rank and peers (Cleveland-Cliffs Inc, US Steel Corp) are disclosure volume only, not toxicity-weighted risk or enforcement status.
Use and verify this record
Steel Dynamics Inc's record groups disclosed TRI parent-company filings so readers can compare reporting context without treating the total as a measure of risk.
Company release figures are computed directly from EPA Toxic Release Inventory data; source names and the record-linking method are documented in the methodology.
Primary sources
- EPA Toxics Release Inventory Basic Data Files - annual facility-level chemical-release disclosures
PlainEnviro renders public EPA records directly from its data pipeline; no figure on this page is typed in by an editor. See the editorial standards and corrections policy for how source changes and reported errors are handled.