Year-over-year total releases
Reported on-site TRI releases in pounds, grouped by reporting year.
Facility detail
HACH CO
100 DAYTON AVE, AMES, IA, 50010
Parent company: VERALTO CORP
Carcinogen
PBT
— EPA classifications across all reporting years
Top chemical totals
The 10 chemicals with the highest cumulative on-site releases 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.
| Year | Methanol | Acetone | Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) | Chloroform | Maleic anhydride | Total |
|---|---|---|---|---|---|---|
| 2024 | — | — | — | — | — | 2 |
| 2023 | — | — | — | — | — | 2 |
| 2022 | — | — | — | — | — | 3 |
| 2021 | — | — | — | — | — | 1 |
| 2020 | — | — | — | — | — | 2 |
| 2019 | — | — | — | — | — | 1 |
| 2018 | — | — | — | — | — | 1 |
| 2017 | 2,500 | — | — | — | — | 2,502 |
| 2016 | — | — | — | — | 45 | 46 |
| 2015 | — | — | — | — | 44 | 45 |
| 2014 | — | — | — | — | 40 | 43 |
| 2013 | — | — | — | — | — | 2 |
| 2012 | — | — | — | — | — | 2 |
| 2011 | — | — | — | — | — | 2 |
| 2010 | — | — | — | — | 10 | 12 |
| 2009 | — | — | — | — | 0 | 0 |
| 2008 | — | — | — | — | 0 | 0 |
| 2007 | — | — | — | — | 0 | 0 |
| 2002 | 1,000 | — | — | — | — | 1,000 |
| 1994 | 2,200 | — | — | 360 | — | 2,560 |
| 1993 | 1,800 | 1,600 | 250 | — | — | 3,650 |
| 1990 | — | 500 | 10 | — | — | 510 |
| 1989 | — | 500 | 500 | — | — | 1,000 |
| 1988 | — | — | 500 | — | — | 500 |