Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NUCOR STEEL CONNECTICUT
35 TOELLES RD, WALLINGFORD, CT, 06492
Parent company: NUCOR CORP
Carcinogen
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases in pounds (lbs) across all available years.
Full release table
Rows are years. Columns show the five highest-total chemicals across all years plus each year's total release volume.
| All values in pounds (lbs) | ||||||
|---|---|---|---|---|---|---|
| Year | Manganese compounds | Nickel compounds | Chromium | Nickel | Chromium compounds (except for chromite ore mined in the Transvaal Region) | Total (lbs) |
| 2024 | — | — | — | — | — | 3 |
| 2023 | — | — | — | — | — | 3 |
| 2022 | — | — | — | — | — | 2 |
| 2021 | — | 1 | — | — | — | 5 |
| 2020 | — | 1 | — | — | 0 | 4 |
| 2019 | — | 1 | — | — | 0 | 17 |
| 2018 | — | — | — | — | — | 16 |
| 2017 | — | 1 | — | — | 0 | 9 |
| 2016 | — | 0 | — | — | 0 | 6 |
| 2015 | — | 1 | — | — | 0 | 5 |
| 2014 | 5 | 1 | — | — | 0 | 16 |
| 2013 | 5 | 1 | — | — | 0 | 26 |
| 2012 | 6 | 1 | — | — | 0 | 21 |
| 2011 | 7 | 2 | — | — | 3 | 14 |
| 2010 | 1 | 5 | — | — | — | 6 |
| 2009 | 0 | 2 | — | — | 1 | 4 |
| 2008 | 4 | 4 | 1 | — | — | 10 |
| 2007 | 255 | 10 | 10 | — | — | 277 |
| 2006 | 255 | 10 | — | — | — | 265 |
| 2005 | 255 | 10 | — | — | — | 265 |
| 2004 | 255 | 10 | — | — | — | 265 |
| 2003 | 255 | 10 | — | — | — | 265 |
| 2002 | — | 10 | — | — | — | 10 |
| 2001 | 255 | 10 | — | — | — | 265 |
| 2000 | 255 | 10 | — | — | — | 265 |
| 1999 | 255 | 10 | — | — | — | 265 |
| 1997 | — | — | — | — | — | 22 |
| 1992 | — | — | 253 | 253 | — | 506 |
| 1991 | — | — | 260 | 260 | — | 520 |
| 1989 | — | 250 | — | — | 250 | 500 |
| 1988 | — | 250 | — | — | 250 | 500 |
▎ Facilities report to EPA's TRI once they manufacture, process, or use a listed chemical above set thresholds. Once that threshold is crossed, they must report actual releases regardless of size — so a small number reflects genuine low-level discharge, not a data error.