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Montgomery County, Iowa: environmental and disease records

Cancer mortality in Montgomery County is 160.8 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 98 regulated facilities, sites and hazards inside the county, led by Rail grade crossing (33), Air permit holder (minor source) (14), Gas station (mapped facility) (10). 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: 41.0303, -95.1562.

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 Montgomery County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Melanoma of the skin	New cases	53.1	23.8	2.23xSignificant	35.5 to 76.5	2019-2023
Kidney & renal pelvis	New cases	38.1	17.9	2.13xSignificant	23.3 to 58.9	2019-2023
Lung & bronchus	New cases	74.1	51.8	1.43xSignificant	56.7 to 96.2	2019-2023
Non-Hodgkin lymphoma	New cases	22.4	18.5	1.21x	13.1 to 36.8	2019-2023
All cancer	New cases	521.3	453.4	1.15xSignificant	467.7 to 579.9	2019-2023
All cancer	Deaths	160.8	143.2	1.12x	133.9 to 192.3	2020-2024
Lung & bronchus	Deaths	32.7	30.2	1.08x	21.8 to 48.5	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 Montgomery County
Measure	County	U.S. median	Difference	Unit
Premature death	8,116.5	9,842.6	-18%	years of life lost before age 75 per 100,000
Life expectancy	75.5	75.3	+0%	years
Child mortality	n/a	59.8	n/a	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	57.6	96.9	-41%	deaths per 100,000
Drug overdose deaths	n/a	28.6	n/a	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.

Formaldehyde15.23 per million
Carbon Tetrachloride2.92 per million
Acetaldehyde1.31 per million
Benzene0.65 per million

EPA Air Quality Index 2025

Monitored on 365 days: 253 good, 1 unhealthy for sensitive groups or worse. Median AQI 43, peak 133.

Regulated facilities, sites and hazards by type

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

Rail grade crossing33
Air permit holder (minor source)14
Gas station (mapped facility)10
Industrial wastewater discharge10
NPDES wastewater discharge permit7
Small hazardous waste generator5
Toxic chemical release facility (TRI)5
TRI reporting facility4
Large hazardous waste generator2
Wastewater plant (mapped facility)2
Major air pollution source1
EPA air quality monitor1
Public airport1
Commercial airport1
Heliport1
Oil-fired power plant1

Highest-severity records

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

Nachurs Alpine Solutions, Red Oak
Toxic chemical release facility (TRI). Chemicals: Ammonia, Hydrogen fluoride, Copper compounds, Manganese compounds and 1 more. 30,832 lbs released over 5 years.
TRI facility ID 51566NCHRS1705N (U.S. EPA Toxics Release Inventory)
Severity 6.4
Central Iowa Ready Mix Red Oak, Red Oak
Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 219 lbs released over 5 years.
TRI facility ID 5156WCNTRL2711N (U.S. EPA Toxics Release Inventory)
Severity 6.3
Na-Churs/Alpine Solutions, Red Oak
TRI reporting facility.
EPA FRS registry ID 110000414506 (U.S. EPA ECHO) Agency record
Severity 6.1
Red Oak City Of Stp, Red Oak
NPDES wastewater discharge permit.
EPA FRS registry ID 110002043299 (U.S. EPA ECHO) Agency record
Severity 6
Parker-Hannifin Corporation, Red Oak
TRI reporting facility.
EPA FRS registry ID 110000593705 (U.S. EPA ECHO) Agency record
Severity 5.8
Johnson Controls Battery Group Inc, Red Oak
TRI reporting facility.
EPA FRS registry ID 110020518821 (U.S. EPA ECHO) Agency record
Severity 5.7
Clarios Llc, Red Oak
Toxic chemical release facility (TRI). Chemicals: Lead And Lead Compounds. 197 lbs released over 5 years.
TRI facility ID 51566JHNSN315FE (U.S. EPA Toxics Release Inventory)
Severity 4.8
VIKING LAKE STATE PARK
EPA air quality monitor.
Record ID 191370002 (U.S. EPA AirData)
Severity 4.4
Villisca Municipal Power Plant, Villisca
Oil-fired power plant.
Record ID 1193 (U.S. Energy Information Administration)
Severity 4
Johnson Controls Battery Group Inc, Red Oak
Large hazardous waste generator.
EPA FRS registry ID 110020518821 (U.S. EPA ECHO) Agency record
Severity 4
Novae Corp., Red Oak
TRI reporting facility.
EPA FRS registry ID 110070550452 (U.S. EPA ECHO) Agency record
Severity 4
Fres-Co System Usa, Inc, Red Oak
Major air pollution source.
EPA FRS registry ID 110001756289 (U.S. EPA ECHO) Agency record
Severity 3.5
Parker-Hannifin Corporation, Red Oak
NPDES wastewater discharge permit.
EPA FRS registry ID 110000593705 (U.S. EPA ECHO) Agency record
Severity 3.3
Fres-Co System Usa, Inc, Red Oak
Large hazardous waste generator.
EPA FRS registry ID 110001756289 (U.S. EPA ECHO) Agency record
Severity 3
Parker Hannifin Corp. Inc., Red Oak
Toxic chemical release facility (TRI). Chemicals: Antimony And Antimony Compounds, Antimony compounds, Zinc compounds, Diphenylamine.
TRI facility ID 51566PRKRHHWY48 (U.S. EPA Toxics Release Inventory)
Severity 3
Novae Llc.-Red Oak, Red Oak
Toxic chemical release facility (TRI). Chemicals: Lead compounds.
TRI facility ID 5156WNVCRP24NBR (U.S. EPA Toxics Release Inventory)
Severity 3
Parker-Hannifin Corporation, Red Oak
Air permit holder (minor source).
EPA FRS registry ID 110000593705 (U.S. EPA ECHO) Agency record
Severity 2.8
Elliott City Of Stp, Elliott
NPDES wastewater discharge permit.
EPA FRS registry ID 110009724049 (U.S. EPA ECHO) Agency record
Severity 2.8
Villisca City Of Stp, Villisca
NPDES wastewater discharge permit.
EPA FRS registry ID 110010035201 (U.S. EPA ECHO) Agency record
Severity 2.8
Villisca City Of Stp, Villisca
Industrial wastewater discharge. Violation Identified.
NPDES permit IA0032549: (U.S. EPA NPDES)
Severity 2.5
Stanton City Of Stp, Stanton
NPDES wastewater discharge permit.
EPA FRS registry ID 110010033757 (U.S. EPA ECHO) Agency record
Severity 2.3
Johnson Controls Battery Group Inc, Red Oak
Air permit holder (minor source).
EPA FRS registry ID 110020518821 (U.S. EPA ECHO) Agency record
Severity 2
Red Oak Muni, Red Oak
Commercial airport. O.
Record ID RDK (FAA / U.S. DOT)
Severity 2
Wastewater Plant
Wastewater plant (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/1076347376 (OpenStreetMap contributors) Agency record
Severity 2
Wastewater Plant
Wastewater plant (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/1076347377 (OpenStreetMap contributors) Agency record
Severity 2

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 Montgomery 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 Montgomery 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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