Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
SUMCO SOUTHWEST CORP
19801 N TATUM BLVD, PHOENIX, AZ, 85050
Parent company: NA
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 | Certain glycol ethers | N-Methyl-2-pyrrolidone | Hydrogen fluoride | Nitric acid | Total (lbs) | |
| 2024 | 684 | 1,962 | 1,048 | 9 | 3,702 | |
| 2023 | 7,613 | 2,204 | 1,259 | 45 | 11,121 | |
| 2022 | 8,851 | 2,115 | 1,397 | 45 | 12,408 | |
| 2021 | 8,656 | 2,384 | 1,414 | 45 | 12,499 | |
| 2020 | 8,060 | 2,864 | 1,278 | 45 | 12,247 | |
| 2019 | 8,340 | 2,864 | 1,269 | 44 | 12,517 | |
| 2018 | 8,776 | 2,483 | 1,396 | 44 | 12,699 | |
| 2017 | 15,753 | 2,599 | 1,381 | 44 | 19,777 | |
| 2016 | 3,921 | 2,611 | 1,329 | — | 7,861 | |
| 2015 | — | 2,534 | 1,367 | — | 3,901 | |
| 2014 | — | 2,674 | 1,344 | — | 4,018 | |
| 2013 | — | 2,085 | 1,185 | — | 3,270 | |
| 2012 | — | 2,085 | 1,060 | — | 3,145 | |
| 2011 | — | 2,221 | 1,196 | — | 3,417 | |
| 2010 | — | 2,442 | 1,385 | — | 3,827 | |
| 2009 | — | 2,178 | 1,041 | — | 3,219 | |
| 2008 | — | 3,031 | 1,352 | — | 4,383 | |
| 2007 | — | 3,586 | 1,357 | — | 4,943 | |
| 2006 | — | 3,155 | 1,317 | — | 4,472 | |
| 2005 | — | 3,111 | 1,244 | — | 4,355 | |
| 2004 | — | 2,598 | 755 | — | 3,353 | |
| 2003 | — | 2,819 | 755 | — | 3,574 | |
| 2002 | — | 2,748 | 755 | — | 3,503 | |
| 2001 | — | 1,872 | 750 | — | 2,622 | |
| 2000 | — | 2,258 | 793 | 950 | 4,001 | |
| 1999 | — | 550 | 27 | 600 | 1,177 | |
| 1998 | 2 | 367 | 250 | 1,520 | 2,139 | |
| 1997 | 21 | 499 | 51 | 724 | 1,295 | |
▎ 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.