Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
WESTLAKE COMPOUNDS LLC
10068 SUMMIT DR, PRAIRIE, MS, 39756
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 | Di(2-ethylhexyl) phthalate | Lead compounds | Lead | Antimony | Cadmium compounds | Total (lbs) |
| 2024 | — | — | 0 | — | — | 0 |
| 2023 | — | — | 0 | — | — | 0 |
| 2022 | — | — | 0 | — | — | 0 |
| 2021 | — | — | 0 | — | — | 0 |
| 2010 | — | 5 | — | — | — | 5 |
| 2009 | — | 5 | — | — | — | 5 |
| 2008 | — | 5 | — | — | — | 5 |
| 2007 | — | 5 | — | — | — | 5 |
| 2006 | — | 6 | — | — | — | 6 |
| 2005 | — | 7 | — | — | — | 7 |
| 2004 | — | 8 | — | — | — | 8 |
| 2003 | — | 6 | — | — | — | 6 |
| 2002 | 60 | 6 | — | — | — | 66 |
| 2001 | 60 | 12 | — | — | — | 72 |
| 2000 | 505 | 7 | — | — | — | 512 |
| 1999 | 255 | 255 | — | — | — | 510 |
| 1998 | — | 250 | — | — | — | 250 |
| 1997 | 250 | — | 250 | 250 | — | 765 |
| 1996 | 255 | — | 5 | 5 | — | 285 |
| 1995 | 31 | 3 | — | — | — | 34 |
| 1994 | 27 | 2 | — | — | 5 | 49 |
| 1993 | 20 | 4 | — | — | 5 | 50 |
| 1992 | 35 | 5 | — | — | — | 52 |
| 1991 | 31 | 5 | — | — | — | 41 |
| 1990 | 28 | 2 | — | — | 50 | 120 |
| 1989 | 31 | 2 | — | — | — | 37 |
| 1988 | 25 | 4 | — | — | — | 30 |
| 1987 | — | 3 | — | — | — | 3 |
▎ 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.