Total reported releases
Total reported releases at Nucor Steel-Darlington have more than doubled since 2010 (through 2024).
TRI facility · TRI 2024 reporting year
Nucor Steel-Darlington
Total reported releases 460k lb rose sharply year over year (+68%). Total releases concentrations have more than doubled since 2010.
300 STEEL MILL RD, Darlington, South Carolina · 331110 · Primary Metals · operated by Nucor CORP
Anomaly engine
Notable Signals
Zinc compounds
Zinc compounds releases at Nucor Steel-Darlington rose from 229k lb to 425k lb between 2023 and 2024.
Manganese And Manganese Compounds
Manganese And Manganese Compounds at Nucor Steel-Darlington have more than halved since 2010 (through 2024).
Chemicals reported · most recent year
What This Facility Releases
Zinc compounds
Zinc compounds concentrations have more than doubled since 2010.
Manganese And Manganese Compounds
Manganese And Manganese Compounds concentrations have more than halved since 2010.
Lead And Lead Compounds
Lead And Lead Compounds concentrations are up 76% since 2010.
Copper And Copper Compounds
Copper And Copper Compounds concentrations have more than halved since 2010.
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region)
Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) concentrations have more than halved since 2010.
Nickel And Nickel Compounds
Nickel And Nickel Compounds concentrations have more than halved since 2010.
Mercury And Mercury Compounds
Mercury And Mercury Compounds concentrations have more than halved since 2010.
Dioxin and dioxin-like compounds
Dioxin and dioxin-like compounds volumes here are too small to anchor a multi-year trend; YoY movement is still shown above.
Equity context · ACS 2018-2022 block-group demographics
Who Lives Next To This Facility
Within 3 miles of this facility (3 Census block groups, population-weighted demographics): a population of 2,812. Why we surface this →
51.9%
Low-income
54.2%
People of color
3.2%
Under age 5
15.5%
Over age 64
Source: Census ACS 2018-2022 block-group demographics, population-weighted across the 3-mile buffer around this facility (from USEPA-clone/EJAM-open blockgroupstats). Indicator-level percentile and EJ-disparity scores are surfaced on the county page and the state page — they describe wider regional exposure burdens, not effects attributable to a single facility.
Source. EPA Toxics Release Inventory · retrieved 2026-05-07. Reporting year 2024. TRI is a federal public-domain dataset under 17 USC §105.
What this is not. TRI quantifies releases reported by the facility under EPCRA §313 — not ambient air or water concentrations measured at receptors. We do not attribute individual health outcomes to specific facilities; that exceeds what the data can support.