Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
NORWALK POWDERED METALS INC
MULLER PARK, NORWALK, CT, 068520271
Parent company: NA
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 | Zinc compounds | Ammonia | Total (lbs) | |||
| 1995 | 321 | — | 321 | |||
| 1993 | 1,450 | 255 | 1,705 | |||
| 1992 | 1,750 | 10 | 1,760 | |||
| 1991 | — | 10 | 10 | |||
| 1990 | — | 255 | 255 | |||
| 1989 | — | 35 | 35 | |||
▎ 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.