Year-over-year total releases
Reported on-site TRI releases in pounds (lbs), grouped by reporting year.
Facility detail
CROWN GROUP WATERLOO PLANT
2320 NORTHEAST DR, WATERLOO, IA, 50703
Parent company: PPG INDUSTRIES INC
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 | Certain glycol ethers | Total (lbs) | ||||
| 2002 | 4,875 | 4,875 | ||||
| 2001 | 32,089 | 32,089 | ||||
| 2000 | 40,372 | 40,372 | ||||
| 1999 | 42,013 | 42,013 | ||||
| 1998 | 66,642 | 66,642 | ||||
| 1997 | 21,549 | 21,549 | ||||
▎ 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.