Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
ZEON CHEMICALS LP MISSISSIPPI PLANT
1301 W 7TH ST, HATTIESBURG, MS, 39401
Parent company: ZEON CHEMICALS LP
Carcinogen
— 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 | Toluene | Epichlorohydrin | Ethylene oxide | Propylene oxide | Benzoyl chloride | Total (lbs) |
| 2024 | 122,191 | 498 | 220 | — | — | 122,909 |
| 2023 | 199,479 | 360 | 0 | — | — | 199,840 |
| 2022 | 225,452 | 334 | 2 | — | — | 225,787 |
| 2021 | 203,557 | 269 | 13 | — | — | 203,839 |
| 2020 | 147,925 | 328 | 10 | — | — | 148,263 |
| 2019 | 138,337 | 288 | 0 | — | — | 138,626 |
| 2018 | 172,511 | 216 | 16 | — | — | 172,743 |
| 2017 | 150,792 | 260 | 4 | — | — | 151,056 |
| 2016 | 128,335 | 203 | 1 | — | — | 128,539 |
| 2015 | 133,400 | 20 | 1 | — | — | 133,421 |
| 2014 | 155,829 | 43 | 1 | — | — | 155,873 |
| 2013 | 104,862 | 40 | 1 | — | — | 104,903 |
| 2012 | 110,663 | 790 | 1 | — | — | 111,454 |
| 2011 | 155,276 | 802 | 30 | — | — | 156,108 |
| 2010 | 183,275 | 1,165 | 357 | — | — | 184,797 |
| 2009 | 113,325 | 785 | 195 | — | — | 114,305 |
| 2008 | 113,325 | 954 | 199 | — | — | 114,478 |
| 2007 | 114,325 | 1,030 | 250 | — | — | 115,605 |
| 2006 | 132,840 | 1,058 | 273 | — | — | 134,171 |
| 2005 | 86,823 | 1,024 | 2,419 | — | — | 90,266 |
| 2004 | 180,166 | 1,355 | 2,416 | — | — | 183,937 |
| 2003 | 163,213 | 1,360 | 2,565 | — | — | 167,138 |
| 2002 | 175,306 | 1,445 | 3,479 | — | — | 180,230 |
| 2001 | 173,423 | 1,245 | 645 | — | — | 175,313 |
| 2000 | 192,463 | 1,084 | 741 | — | — | 194,288 |
| 1999 | 298,561 | 1,290 | 1,447 | — | — | 301,298 |
| 1998 | 321,980 | 1,381 | 1,550 | 856 | — | 325,767 |
| 1997 | 366,980 | 1,464 | 1,657 | 864 | — | 370,965 |
| 1996 | 359,400 | 14,200 | 7,904 | 1,248 | — | 382,752 |
| 1995 | 370,696 | 14,420 | 8,000 | 1,260 | — | 394,376 |
| 1994 | 177,305 | 2,262 | 3,136 | 443 | — | 183,146 |
| 1993 | 65,123 | 1,641 | 2,273 | 321 | — | 69,358 |
| 1992 | 49,712 | 1,253 | 1,735 | 245 | — | 52,945 |
| 1991 | 54,931 | 1,384 | 1,917 | 270 | — | 58,503 |
| 1990 | 104,618 | 4,794 | 7,567 | 3,054 | — | 120,033 |
| 1989 | 86,303 | 4,098 | 6,360 | 4,608 | — | 101,369 |
| 1988 | — | 6,500 | 810 | — | — | 7,310 |
| 1987 | — | — | 284 | — | 330 | 614 |
▎ 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.