Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
PRATT & WHITNEY
AIRCRAFT RD, SOUTHINGTON, CT, 06489
Parent company: UNITED TECHNOLOGIES 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 | 1,1,1-Trichloroethane | Nickel | Nitric acid | Sodium hydroxide (solution) | Chromium | Total (lbs) |
| 1995 | — | 63 | — | — | 19 | 95 |
| 1994 | — | 303 | — | — | 122 | 520 |
| 1993 | 2,300 | 342 | — | — | 118 | 2,848 |
| 1992 | 10,079 | 453 | 138 | — | 160 | 10,932 |
| 1991 | 78,300 | 407 | 245 | — | 129 | 79,215 |
| 1990 | 140,380 | 518 | 173 | — | 142 | 141,351 |
| 1989 | 120,410 | 504 | 274 | — | 165 | 121,583 |
| 1988 | 150,450 | — | 320 | 1,790 | — | 152,757 |
| 1987 | — | — | 1,110 | 314 | — | 1,652 |
▎ 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.