Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KOPPERS INC (SUSQUEHANNA)
50 KOPPERS LN, MONTGOMERY, PA, 17752
Parent company: KOPPERS INC
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 | Creosote | Naphthalene | Dibenzofuran | Lead compounds | Anthracene | Total (lbs) |
| 2024 | 1,707 | — | — | — | — | 1,710 |
| 2023 | 1,708 | — | — | — | — | 1,712 |
| 2022 | 1,606 | — | — | — | — | 1,609 |
| 2021 | 1,557 | — | — | — | — | 1,560 |
| 2020 | 1,906 | — | — | — | — | 1,909 |
| 2019 | 1,798 | — | — | — | — | 1,801 |
| 2018 | 1,681 | — | — | — | — | 1,685 |
| 2017 | 1,547 | — | — | — | — | 1,550 |
| 2016 | 2,336 | — | — | — | — | 2,339 |
| 2015 | 2,427 | — | — | — | — | 2,432 |
| 2014 | 1,896 | — | — | — | — | 1,900 |
| 2013 | 2,455 | — | — | 22 | — | 2,483 |
| 2012 | 2,476 | — | — | 31 | — | 2,513 |
| 2011 | 2,572 | — | — | 40 | — | 2,620 |
| 2010 | 2,417 | — | — | 42 | — | 2,466 |
| 2009 | 5,855 | — | — | 44 | — | 5,905 |
| 2008 | 5,487 | — | — | 41 | — | 5,534 |
| 2007 | 7,700 | — | — | 53 | — | 7,760 |
| 2006 | 6,200 | — | — | 50 | — | 6,256 |
| 2005 | 7,300 | — | — | 51 | — | 7,357 |
| 2004 | 7,405 | — | — | 50 | — | 7,461 |
| 2003 | 4,650 | — | — | 59 | — | 4,732 |
| 2002 | 4,355 | — | — | 61 | — | 4,426 |
| 2001 | 3,124 | — | — | — | — | 3,132 |
| 2000 | 4,420 | — | — | — | — | 4,439 |
| 1999 | 6,852 | — | — | — | — | 6,852 |
| 1998 | 5,702 | — | — | — | — | 5,702 |
| 1997 | 3,374 | — | — | — | — | 3,374 |
| 1996 | 3,156 | — | — | — | — | 3,156 |
| 1995 | 4,400 | — | — | — | — | 4,400 |
| 1994 | 12,400 | — | — | — | — | 12,400 |
| 1993 | 9,400 | — | — | — | — | 9,400 |
| 1992 | 7,820 | — | — | — | — | 7,820 |
| 1991 | 2,360 | — | — | — | — | 2,360 |
| 1990 | 5,348 | — | — | — | — | 5,348 |
| 1989 | — | 1,608 | 647 | — | 534 | 2,789 |
| 1988 | — | 2,849 | 1,789 | — | — | 4,638 |
▎ 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.