Facility detail

GUARDIAN INDUSTRIES - DEWITT

300 S 5TH AVE E, DE WITT, IA, 52742

Parent company: KOCH INC.

Carcinogen PBT — EPA classifications across all reporting years

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Year-over-year total releases

Reported on-site TRI releases in pounds (lbs), grouped by reporting year.

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	Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size)	Ammonia	Xylene (mixed isomers)	Lead compounds	n-Butyl alcohol	Total (lbs)
2024	—	14,761	—	—	—	14,765
2023	—	9,989	—	5	—	9,994
2022	—	130	—	—	—	135
2021	—	739	—	5	—	744
2020	—	650	—	—	—	655
2019	—	643	—	—	115	762
2018	—	556	—	5	—	561
2017	—	—	—	60	—	60
2016	—	—	—	62	—	62
2015	—	—	—	62	—	62
2014	—	—	—	64	—	64
2013	—	—	—	65	—	65
2012	—	—	—	65	—	65
2011	—	—	—	64	255	319
2010	—	—	—	64	—	64
2009	—	—	—	67	—	67
2008	—	—	—	63	—	63
2007	—	—	—	60	—	60
2006	—	—	—	60	107	167
2005	27,727	—	16	60	38	27,841
2004	27,995	—	52	60	12	28,133
2003	32,716	—	57	60	10	32,856
2002	31,772	—	874	60	—	32,706
2001	29,993	—	3,882	56	—	33,931
2000	48,325	—	4,504	—	—	52,829
1999	47,264	—	8,108	—	—	55,372
1998	47,418	—	2,099	—	—	49,517
1997	43,800	—	—	—	—	43,800

▎ 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.