Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WESTLAKE POLYMERS LLC
3525 CITIES SERVICE HWY, SULPHUR, LA, 70665
Parent company: WESTLAKE CORP
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 | Ethylene | Vinyl acetate | Propylene | tert-Butyl alcohol | Chlorine | Total (lbs) |
| 2024 | 352,436 | 94,165 | 3,123 | 62 | — | 449,787 |
| 2023 | 337,610 | 80,782 | 2,422 | 62 | — | 420,876 |
| 2022 | 349,914 | 78,785 | 2,403 | 62 | — | 431,164 |
| 2021 | 344,690 | 76,884 | 2,223 | 64 | — | 423,860 |
| 2020 | 381,977 | 73,471 | 2,261 | 63 | — | 457,772 |
| 2019 | 400,195 | 78,526 | 2,578 | 62 | — | 481,361 |
| 2018 | 371,991 | 80,113 | 3,282 | 62 | — | 455,448 |
| 2017 | 569,450 | 82,127 | 7,848 | 1,145 | — | 660,570 |
| 2016 | 390,815 | 17,424 | 346 | 1,104 | — | 409,689 |
| 2015 | 468,943 | 16,654 | 769 | 1,234 | — | 487,600 |
| 2014 | 401,176 | 29,702 | 842 | 1,220 | — | 432,940 |
| 2013 | 345,504 | 32,051 | 340 | 1,234 | — | 379,129 |
| 2012 | 258,390 | 11,637 | 321 | 1,060 | — | 271,408 |
| 2011 | 256,924 | 12,082 | 72 | 1,160 | — | 270,238 |
| 2010 | 310,148 | 12,954 | 5,617 | 1,188 | — | 329,907 |
| 2009 | 246,469 | 11,109 | 6,836 | 1,188 | — | 265,602 |
| 2008 | 258,492 | 12,363 | 6,698 | 1,188 | — | 278,741 |
| 2007 | 343,249 | 12,728 | 11,076 | 1,188 | — | 368,241 |
| 2006 | 416,830 | 6,390 | 9,753 | 116 | — | 433,089 |
| 2005 | 358,095 | 7,741 | 11,496 | 9,470 | — | 386,802 |
| 2004 | 301,239 | 4,180 | 10,748 | — | — | 316,167 |
| 2003 | 165,807 | 4,193 | 12,205 | — | — | 182,205 |
| 2002 | 402,065 | 4,251 | 20,316 | — | — | 426,632 |
| 2001 | 203,792 | 8,901 | 2,552 | — | — | 215,245 |
| 2000 | 221,417 | 4,908 | 11,733 | — | — | 238,058 |
| 1999 | 184,456 | 7,610 | 3,654 | — | — | 195,720 |
| 1998 | 133,795 | 7,603 | 3,651 | — | 612 | 145,661 |
| 1997 | 153,660 | 6,500 | 21,460 | — | 1,050 | 182,981 |
| 1996 | 431,960 | 12,820 | 22,080 | — | 1,050 | 468,223 |
| 1995 | 556,280 | 18,960 | 11,700 | — | 1,050 | 588,303 |
| 1994 | 916,580 | 15,940 | 28,520 | — | 1,050 | 962,403 |
| 1993 | 824,000 | 15,940 | 28,240 | — | 1,050 | 869,542 |
| 1992 | 854,343 | 6,622 | 24,487 | — | 1,050 | 886,776 |
| 1991 | 818,000 | 3,800 | 27,690 | — | 1,050 | 850,821 |
| 1990 | 1,101,159 | 9,442 | 20,045 | — | 1,050 | 1,132,019 |
| 1989 | 880,000 | 66,216 | 51,513 | — | 241 | 998,164 |
| 1988 | — | — | 4,130 | — | — | 4,630 |
▎ 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.