Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WESTLAKE COMPOUNDS LLC
210 IND US TRIAL DR N, MADISON, MS, 39110
Parent company: WESTLAKE 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 | Antimony And Antimony Compounds | Antimony compounds | Lead compounds | Lead | Zinc (fume or dust) | Total (lbs) |
| 2024 | 249 | — | — | 0 | — | 249 |
| 2023 | 243 | — | — | 0 | — | 243 |
| 2022 | 431 | — | — | 0 | — | 431 |
| 2021 | 362 | — | — | 0 | — | 363 |
| 2020 | 1,000 | — | — | — | — | 1,255 |
| 2019 | — | 5 | — | — | — | 5 |
| 2018 | — | 5 | — | — | — | 5 |
| 2017 | — | 1,060 | — | — | — | 1,060 |
| 2016 | — | 10 | — | — | — | 10 |
| 2015 | — | 10 | — | — | — | 10 |
| 2014 | — | 10 | 1 | — | — | 11 |
| 2013 | — | 10 | 1 | — | — | 11 |
| 2012 | — | 10 | 1 | — | — | 11 |
| 2011 | — | 10 | 1 | — | — | 11 |
| 2010 | — | 10 | 1 | — | — | 11 |
| 2009 | — | 10 | 1 | — | — | 11 |
| 2008 | — | 10 | 12 | — | — | 22 |
| 2007 | — | 10 | 31 | — | — | 41 |
| 2006 | — | 10 | 49 | — | — | 59 |
| 2005 | — | 10 | 138 | — | — | 148 |
| 2004 | — | 10 | 140 | — | — | 150 |
| 2003 | — | 10 | 140 | — | — | 150 |
| 2002 | — | 5 | 8 | — | — | 13 |
| 2001 | — | — | — | 141 | 255 | 411 |
| 2000 | — | — | — | 255 | 255 | 525 |
| 1999 | — | — | 250 | — | — | 250 |
| 1998 | — | — | 250 | — | — | 250 |
| 1997 | — | — | — | 250 | 1 | 506 |
| 1996 | — | — | — | 5 | 1 | 16 |
| 1995 | — | 5 | 5 | — | — | 10 |
| 1994 | — | 5 | 5 | — | — | 10 |
| 1993 | — | — | 5 | — | — | 15 |
| 1992 | — | — | 5 | — | — | 20 |
| 1991 | — | — | — | — | — | 5 |
▎ 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.