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Linn County, Iowa: environmental and disease records

Cancer mortality in Linn County is 136.9 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Non-Hodgkin lymphoma deaths at 1.3 times the U.S. rate and Lung & bronchus deaths at 1.1 times the U.S. rate. Federal databases place 998 regulated facilities, sites and hazards inside the county, led by Air permit holder (minor source) (341), Rail grade crossing (199), Gas station (mapped facility) (109). EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 30 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: 42.0796, -91.5998.

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 Linn 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	35.5	23.8	1.49xSignificant	32.3 to 38.9	2019-2023
Melanoma of the skin	Deaths	2.9	2	1.45x	2 to 3.9	2020-2024
Thyroid	New cases	18.1	13	1.39xSignificant	15.7 to 20.7	2019-2023
Childhood cancer (under 15)	New cases	21	16.4	1.28x	15.3 to 28.1	2019-2023
Non-Hodgkin lymphoma	Deaths	6.1	4.8	1.27xSignificant	4.9 to 7.5	2020-2024
Kidney & renal pelvis	New cases	22	17.9	1.23xSignificant	19.5 to 24.7	2019-2023
Non-Hodgkin lymphoma	New cases	22.2	18.5	1.2xSignificant	19.7 to 24.8	2019-2023
Brain & nervous system	New cases	7.4	6.2	1.19x	6 to 9.1	2019-2023
Leukemia	New cases	17.1	14.5	1.18xSignificant	15 to 19.5	2019-2023
Lung & bronchus	New cases	60.8	51.8	1.17xSignificant	56.8 to 65	2019-2023
Leukemia	Deaths	6.6	5.7	1.16x	5.3 to 8.1	2020-2024
Bladder	New cases	21.6	18.7	1.16xSignificant	19.3 to 24.2	2019-2023
All cancer	New cases	517.3	453.4	1.14xSignificant	505.2 to 529.6	2019-2023
Lung & bronchus	Deaths	33.3	30.2	1.1xSignificant	30.4 to 36.4	2020-2024
Brain & nervous system	Deaths	4.8	4.4	1.09x	3.7 to 6.1	2020-2024
Esophagus	New cases	4.9	4.6	1.07x	3.8 to 6.2	2019-2023
Kidney & renal pelvis	Deaths	3.5	3.4	1.03x	2.6 to 4.6	2020-2024
Pancreas	New cases	13.5	13.9	0.97x	11.7 to 15.6	2019-2023
Liver & bile duct	New cases	8.4	8.7	0.97x	6.9 to 10	2019-2023
All cancer	Deaths	136.9	143.2	0.96x	130.9 to 143.1	2020-2024
Esophagus	Deaths	3.4	3.7	0.92x	2.5 to 4.6	2020-2024
Pancreas	Deaths	10.3	11.3	0.91x	8.8 to 12.1	2020-2024
Liver & bile duct	Deaths	5.8	6.6	0.88x	4.7 to 7.2	2020-2024
Stomach	New cases	5.1	6.6	0.77x	4 to 6.4	2019-2023
Bladder	Deaths	3.1	4.1	0.76x	2.2 to 4.1	2020-2024
Stomach	Deaths	1.3	2.7	0.48x	0.8 to 2	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 Linn County
Measure	County	U.S. median	Difference	Unit
Premature death	7,000.9	9,842.6	-29%	years of life lost before age 75 per 100,000
Life expectancy	78.5	75.3	+4%	years
Child mortality	42.2	59.8	-29%	deaths under age 18 per 100,000
Infant mortality	4.7	6.2	-24%	deaths under age 1 per 1,000 live births
Injury deaths	78.6	96.9	-19%	deaths per 100,000
Drug overdose deaths	18.5	28.6	-35%	deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 30 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

Formaldehyde16.21 per million
Carbon Tetrachloride2.96 per million
Acetaldehyde1.68 per million
Benzene1.16 per million

EPA Air Quality Index 2025

Monitored on 365 days: 224 good, 5 unhealthy for sensitive groups or worse. Median AQI 44, peak 163.

Regulated facilities, sites and hazards by type

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

Air permit holder (minor source)341
Rail grade crossing199
Gas station (mapped facility)109
NPDES wastewater discharge permit53
Small hazardous waste generator52
Auto repair or body shop (mapped facility)44
Brownfield property44
Industrial wastewater discharge38
Toxic chemical release facility (TRI)29
TRI reporting facility22
Major air pollution source16
Wastewater plant (mapped facility)9
Large greenhouse gas emitter8
Oil-fired power plant7
Large hazardous waste generator6
EPA air quality monitor3
Dry cleaner (mapped facility)3
Hazardous waste transporter3
Heliport3
Landfill (mapped facility)2
Gas power plant2
Public airport1
Commercial airport1
Coal power plant1
Wind power plant1
Scrapyard (mapped facility)1

Highest-severity records

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

Adm Corn Processing, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ammonia, Acetaldehyde, Methanol and 4 more. Reports carcinogens. 2,652,823 lbs released over 5 years.
TRI facility ID 52404DMCRN1350W (U.S. EPA Toxics Release Inventory)
Severity 9.4
Klinger Paint Company, Cedar Rapids
TRI reporting facility.
EPA FRS registry ID 110000415060 (U.S. EPA ECHO) Agency record
Severity 9
Red Star Yeast Co Llc, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Acetaldehyde, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia, Nitric acid and 3 more. Reports carcinogens. 414,816 lbs released over 5 years.
TRI facility ID 52404RDSTR956TH (U.S. EPA Toxics Release Inventory)
Severity 8.8
Cargill Inc Corn Milling, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Propylene oxide, Acetaldehyde, Chloroform, Lead And Lead Compounds and 1 more. Reports carcinogens. 336,074 lbs released over 5 years.
TRI facility ID 52406CRGLL17101 (U.S. EPA Toxics Release Inventory)
Severity 8.7
International Paper Co Cedar River Mill, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Methanol, Certain glycol ethers, Acetaldehyde, Lead And Lead Compounds and 2 more. Reports carcinogens. 309,819 lbs released over 5 years.
TRI facility ID 52402CDRRV4600C (U.S. EPA Toxics Release Inventory)
Severity 8.7
Klinger Paint Co Inc, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Xylene (mixed isomers), Certain glycol ethers, Toluene, Ethylbenzene and 1 more. Reports carcinogens. 112,801 lbs released over 5 years.
TRI facility ID 52404KLNGR5555H (U.S. EPA Toxics Release Inventory)
Severity 8.4
Ingredion Inc, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Acetaldehyde, Methanol, n-Hexane, Ethylene oxide and 4 more. Reports carcinogens. 97,233 lbs released over 5 years.
TRI facility ID 52406PNFRD1001F (U.S. EPA Toxics Release Inventory)
Severity 8.3
Pmx Industries Inc, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Zinc (fume or dust), Copper compounds, Aluminum oxide (fibrous forms), Nickel compounds and 4 more. Reports carcinogens. 80,998 lbs released over 5 years.
TRI facility ID 52404PMXND5300W (U.S. EPA Toxics Release Inventory)
Severity 8.3
Prairie Creek Generating Station, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Hydrogen fluoride, Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Barium And Barium Compounds, Lead compounds and 4 more. Reports carcinogens. 79,689 lbs released over 5 years.
TRI facility ID 52404PRRCR3300C (U.S. EPA Toxics Release Inventory)
Severity 8.3
Diamond V Mills Llc South Plant, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Acetaldehyde, Formaldehyde, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid. Reports carcinogens. 43,700 lbs released over 5 years.
TRI facility ID 5240WDMNDV25756 (U.S. EPA Toxics Release Inventory)
Severity 8.1
Quaker Manufacturing Llc, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Styrene. Reports carcinogens. 18,562 lbs released over 5 years.
TRI facility ID 52401QKRTS418SE (U.S. EPA Toxics Release Inventory)
Severity 7.8
Cargill Inc., Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: n-Hexane. 1,133,957 lbs released over 5 years.
TRI facility ID 52404CRGLL11031 (U.S. EPA Toxics Release Inventory)
Severity 7.6
Archer Daniels Midland Company - Cedar Rapids, Cedar Rapids
TRI reporting facility. Penalties $5,900.
EPA FRS registry ID 110010507503 (U.S. EPA ECHO) Agency record
Severity 7.6
Red Star Yeast Company, Cedar Rapids
TRI reporting facility. Penalties $75,410.
EPA FRS registry ID 110023014165 (U.S. EPA ECHO) Agency record
Severity 7.5
Cargill Inc, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: n-Hexane. 680,845 lbs released over 5 years.
TRI facility ID 52402CRGLL4116T (U.S. EPA Toxics Release Inventory)
Severity 7.5
Cargill, Inc., Cedar Rapids
TRI reporting facility.
EPA FRS registry ID 110010507488 (U.S. EPA ECHO) Agency record
Severity 7.5
Acterra Group Llc, Marion
Toxic chemical release facility (TRI). Chemicals: Chromium, Nickel. Reports carcinogens. 3,907 lbs released over 5 years.
TRI facility ID 5230WCTRRG235TH (U.S. EPA Toxics Release Inventory)
Severity 7.3
Prairie Creek, Cedar Rapids
TRI reporting facility. Penalties $14,576.
EPA FRS registry ID 110017344337 (U.S. EPA ECHO) Agency record
Severity 6.9
International Paper Cedar River Mill, Cedar Rapids
TRI reporting facility.
EPA FRS registry ID 110001361945 (U.S. EPA ECHO) Agency record
Severity 6.5
Highway Equipment Co, Cedar Rapids
Toxic chemical release facility (TRI). Chemicals: Chromium, Manganese, Nickel, Lead. Reports carcinogens. 404 lbs released over 5 years.
TRI facility ID 52404HGHWY13376 (U.S. EPA Toxics Release Inventory)
Severity 6.5
Cargill Inc - East Soybean Plant, Cedar Rapids
TRI reporting facility.
EPA FRS registry ID 110000414953 (U.S. EPA ECHO) Agency record
Severity 6.5
Cargill, Inc - Domestic Soybean Processing, Cedar Rapids
TRI reporting facility.
EPA FRS registry ID 110000415024 (U.S. EPA ECHO) Agency record
Severity 6.4
Archer Daniels Midland Cedar Rapids, Cedar Rapids
Coal power plant.
Record ID 10864 (U.S. Energy Information Administration)
Severity 6.3
Penford Products, Cedar Rapids
TRI reporting facility.
EPA FRS registry ID 110000415168 (U.S. EPA ECHO) Agency record
Severity 6.2
Diamond V Mills Inc - South Plant, Cedar Rapids
TRI reporting facility.
EPA FRS registry ID 110037596090 (U.S. EPA ECHO) Agency record
Severity 6.1

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 Linn 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 Linn 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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