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Clinton County, Iowa: environmental and disease records

Cancer mortality in Clinton County is 171.7 deaths per 100,000 people per year against a U.S. rate of 143.2, a statistically significant excess. The strongest disease signals are Kidney & renal pelvis deaths at 2 times the U.S. rate and Esophagus deaths at 1.9 times the U.S. rate. Federal databases place 449 regulated facilities, sites and hazards inside the county, led by Rail grade crossing (108), Brownfield property (99), Industrial wastewater discharge (66). EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 20 in a million, driven mainly by formaldehyde.

Rates are age-adjusted per 100,000 people. A cancer signal is marked significant when the lower bound of its 95 percent confidence interval is above the U.S. rate. Facility counts use active federal records located inside the county boundary. Approximate county center: 41.8807, -90.5327.

How this county ranks in Iowa

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Cancer deaths and new cases versus the United States

Source: NCI and CDC State Cancer Profiles, both sexes, all ages. Sorted by the ratio of the county rate to the U.S. rate.

Cancer rates for Clinton County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Kidney & renal pelvis	Deaths	6.9	3.4	2.03xSignificant	4.3 to 10.5	2020-2024
Esophagus	Deaths	7.1	3.7	1.92xSignificant	4.5 to 10.7	2020-2024
Kidney & renal pelvis	New cases	30.2	17.9	1.69xSignificant	24.2 to 37.2	2019-2023
Esophagus	New cases	7.4	4.6	1.61xSignificant	4.8 to 11.2	2019-2023
Melanoma of the skin	New cases	37.5	23.8	1.58xSignificant	30.5 to 45.6	2019-2023
Lung & bronchus	Deaths	44.4	30.2	1.47xSignificant	37.6 to 52.2	2020-2024
Lung & bronchus	New cases	73	51.8	1.41xSignificant	64.4 to 82.7	2019-2023
Non-Hodgkin lymphoma	New cases	25.6	18.5	1.38xSignificant	20.1 to 32.2	2019-2023
All cancer	New cases	553.3	453.4	1.22xSignificant	527.1 to 580.6	2019-2023
Non-Hodgkin lymphoma	Deaths	5.8	4.8	1.21x	3.5 to 9.2	2020-2024
All cancer	Deaths	171.7	143.2	1.2xSignificant	157.9 to 186.5	2020-2024
Bladder	New cases	21.2	18.7	1.13x	16.6 to 26.8	2019-2023
Leukemia	New cases	16.3	14.5	1.12x	12 to 21.6	2019-2023
Thyroid	New cases	14.6	13	1.12x	10 to 20.5	2019-2023
Bladder	Deaths	4.4	4.1	1.07x	2.5 to 7.4	2020-2024
Brain & nervous system	New cases	6.3	6.2	1.02x	3.5 to 10.4	2019-2023
Pancreas	New cases	13	13.9	0.94x	9.4 to 17.6	2019-2023
Liver & bile duct	New cases	8.1	8.7	0.93x	5.3 to 12	2019-2023
Stomach	New cases	6.1	6.6	0.92x	3.7 to 9.8	2019-2023
Pancreas	Deaths	10.3	11.3	0.91x	7.2 to 14.5	2020-2024
Liver & bile duct	Deaths	5.4	6.6	0.82x	3.1 to 8.9	2020-2024
Leukemia	Deaths	4.6	5.7	0.81x	2.7 to 7.7	2020-2024

Mortality measures versus the U.S. county median

Source: County Health Rankings, built from CDC National Vital Statistics System death records. The comparison value is the median of all U.S. counties.

Mortality measures for Clinton County
Measure	County	U.S. median	Difference	Unit
Premature death	8,790	9,842.6	-11%	years of life lost before age 75 per 100,000
Life expectancy	75.9	75.3	+1%	years
Child mortality	39.2	59.8	-34%	deaths under age 18 per 100,000
Infant mortality	n/a	6.2	n/a	deaths under age 1 per 1,000 live births
Injury deaths	98.6	96.9	+2%	deaths per 100,000
Drug overdose deaths	26.6	28.6	-7%	deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 20 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

Formaldehyde15.92 per million
Carbon Tetrachloride2.97 per million
Acetaldehyde1.63 per million
Benzene0.85 per million

EPA Air Quality Index 2025

Monitored on 365 days: 217 good, 3 unhealthy for sensitive groups or worse. Median AQI 45, peak 166.

Regulated facilities, sites and hazards by type

449 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

Rail grade crossing108
Brownfield property99
Industrial wastewater discharge66
Air permit holder (minor source)57
NPDES wastewater discharge permit34
Gas station (mapped facility)27
Toxic chemical release facility (TRI)12
TRI reporting facility10
Small hazardous waste generator8
Major air pollution source5
Large greenhouse gas emitter5
Auto repair or body shop (mapped facility)4
Public airport3
Large hazardous waste generator3
EPA air quality monitor2
Wastewater plant (mapped facility)2
Commercial airport1
Heliport1
Coal power plant1
Superfund (NPL) site1

Highest-severity records

The 25 records with the highest Envyrofax severity in the county, with the agency identifier to cite in a records request.

Lawrence Todtz Farm, Camanche
Superfund (NPL) site. Hazard Ranking System score 52.1. NPL Site.
EPA site ID IAD000606038 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Equistar Chemicals Clinton Plant, Clinton
Toxic chemical release facility (TRI). Chemicals: Ethylene, Propylene, Ammonia, Benzene and 4 more. Reports carcinogens. 9,773,607 lbs released over 5 years.
TRI facility ID 52732QNTMCUSHWY (U.S. EPA Toxics Release Inventory)
Severity 9.9
Archer Daniels Midland Company (Clinton), Clinton
TRI reporting facility.
EPA FRS registry ID 110000415630 (U.S. EPA ECHO) Agency record
Severity 9.8
Adm Corn Processing, Clinton
Toxic chemical release facility (TRI). Chemicals: Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), n-Hexane, Acetaldehyde, Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size) and 4 more. Reports carcinogens. 6,235,221 lbs released over 5 years.
TRI facility ID 52732DMCRN1251B (U.S. EPA Toxics Release Inventory)
Severity 9.7
Latham Pool Products Inc. - Dewitt Ia, De Witt
Toxic chemical release facility (TRI). Chemicals: Styrene, Methyl methacrylate. Reports carcinogens. 466,310 lbs released over 5 years.
TRI facility ID 5274WLTHMP818IN (U.S. EPA Toxics Release Inventory)
Severity 8.9
Equistar Chemicals, Clinton
TRI reporting facility. Penalties $3,400,000.
EPA FRS registry ID 110012169517 (U.S. EPA ECHO) Agency record
Severity 8.6
Sethness Products Company, Clinton
TRI reporting facility.
EPA FRS registry ID 110000415685 (U.S. EPA ECHO) Agency record
Severity 7.9
Darling Ingredients Inc, Clinton
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution). 263,799 lbs released over 5 years.
TRI facility ID 52732NTNLB1423B (U.S. EPA Toxics Release Inventory)
Severity 7.2
Sethness Products Co, Clinton
Toxic chemical release facility (TRI). Chemicals: Ammonia. 69,807 lbs released over 5 years.
TRI facility ID 52732STHNS1347B (U.S. EPA Toxics Release Inventory)
Severity 6.7
Archer Daniels Midland Company (Clinton), Clinton
Major air pollution source.
EPA FRS registry ID 110000415630 (U.S. EPA ECHO) Agency record
Severity 6.5
Guardian Industries - Dewitt, De Witt
Toxic chemical release facility (TRI). Chemicals: Ammonia, Lead And Lead Compounds, Lead compounds. 26,292 lbs released over 5 years.
TRI facility ID 52742GRDNN300S5 (U.S. EPA Toxics Release Inventory)
Severity 6.4
Latham Pool Products, Inc., De Witt
TRI reporting facility.
EPA FRS registry ID 110070102006 (U.S. EPA ECHO) Agency record
Severity 6.3
Clinton Biodiesel Llc, Clinton
Toxic chemical release facility (TRI). Chemicals: Methanol. 17,048 lbs released over 5 years.
TRI facility ID 5273WNVBFL56444 (U.S. EPA Toxics Release Inventory)
Severity 6.2
Archer Daniels Midland Clinton, Clinton
Coal power plant.
Record ID 10860 (U.S. Energy Information Administration)
Severity 6.2
Archer Daniels Midland Company (Clinton), Clinton
NPDES wastewater discharge permit.
EPA FRS registry ID 110000415630 (U.S. EPA ECHO) Agency record
Severity 6
Clinton Wwtp, Clinton
NPDES wastewater discharge permit.
EPA FRS registry ID 110001123203 (U.S. EPA ECHO) Agency record
Severity 6
Dewitt Wwtp, Dewitt
NPDES wastewater discharge permit.
EPA FRS registry ID 110010034319 (U.S. EPA ECHO) Agency record
Severity 6
Guardian Industries - Dewitt, Dewitt
TRI reporting facility.
EPA FRS registry ID 110017403745 (U.S. EPA ECHO) Agency record
Severity 5.9
CLINTON, CHANCY PARK, Clinton
EPA air quality monitor.
Record ID 190450019 (U.S. EPA AirData)
Severity 5.8
Archer Daniels Midland Company (Clinton), Clinton
Large greenhouse gas emitter.
EPA FRS registry ID 110000415630 (U.S. EPA ECHO) Agency record
Severity 5.5
Darling International Inc, Clinton
TRI reporting facility.
EPA FRS registry ID 110000415649 (U.S. EPA ECHO) Agency record
Severity 5.3
Equistar Chemicals, Clinton
Major air pollution source. Penalties $3,400,000.
EPA FRS registry ID 110012169517 (U.S. EPA ECHO) Agency record
Severity 5.3
Merrill Iron & Steel Inc, Camanche
Toxic chemical release facility (TRI). Chemicals: Manganese And Manganese Compounds, Nickel And Nickel Compounds. Reports carcinogens. 2 lbs released over 5 years.
TRI facility ID 5273WMRRLL2117T (U.S. EPA Toxics Release Inventory)
Severity 4.8
CLINTON, RAINBOW PARK, Clinton
EPA air quality monitor.
Record ID 190450021 (U.S. EPA AirData)
Severity 4.8
Equistar Chemicals, Clinton
Large hazardous waste generator. Penalties $3,400,000.
EPA FRS registry ID 110012169517 (U.S. EPA ECHO) Agency record
Severity 4.8

Correctional facilities

Prisons, jails and corrections operations with an EPA facility record, and the drinking water and wastewater compliance attached to them.

No correctional facility with an EPA record is located in this county.

Discovery / public records

Records to request for Clinton County

Iowa state cancer registry
Cancer incidence counts by census tract or ZIP code, by cancer type and year (de-identified). Any cancer cluster inquiries or investigations in Clinton County, and their findings.
Iowa vital statistics office
Death certificate counts by cause of death and residence tract or ZIP code, and the years behind the mortality measures above.
Iowa health department, environmental epidemiology
Health consultations or assessments by ATSDR or the state health department covering the county, and any exposure investigations.
Iowa environmental agency and the U.S. EPA regional office
Compliance history, inspection reports, notices of violation, penalties and enforcement actions for each facility above, cited by EPA FRS registry ID.
Iowa drinking water program
Violation notices, sampling results and sanitary surveys for the public water systems serving the county, including any system serving a correctional facility.
Department of corrections or county sheriff
Water testing, grievances and environmental health inspections for the correctional facilities listed above.

Each Envyrofax address report includes a printable records request worksheet with the custodian and the exact request wording per finding.

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