Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
KENT NUTRITION GROUP INC
2233 W AIRLINE HWY, WATERLOO, IA, 50703
Parent company: KENT CORP
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 | Manganese compounds | Zinc compounds | Manganese And Manganese Compounds | Copper compounds | Total (lbs) | |
| 2022 | 3 | 6 | — | — | 9 | |
| 2020 | — | — | 5 | — | 5 | |
| 2019 | 250 | — | — | — | 250 | |
| 2018 | 20 | — | — | — | 20 | |
| 2017 | 4 | 3 | — | 1 | 7 | |
| 2016 | 1 | 3 | — | 1 | 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.