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Scott County, Iowa: environmental and disease records

Cancer mortality in Scott County is 148.5 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Melanoma of the skin deaths at 1.5 times the U.S. rate and Lung & bronchus deaths at 1.1 times the U.S. rate. Federal databases place 670 regulated facilities, sites and hazards inside the county, led by Rail grade crossing (147), Air permit holder (minor source) (141), Gas station (mapped facility) (100). 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: 41.6129, -90.6202.

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 Scott County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Melanoma of the skin	Deaths	3	2	1.5xSignificant	2.1 to 4.3	2020-2024
Melanoma of the skin	New cases	33.1	23.8	1.39xSignificant	29.6 to 36.9	2019-2023
Brain & nervous system	New cases	7.6	6.2	1.23x	6 to 9.6	2019-2023
Lung & bronchus	New cases	62.9	51.8	1.21xSignificant	58.3 to 67.7	2019-2023
Thyroid	New cases	15.4	13	1.18x	12.9 to 18.2	2019-2023
Kidney & renal pelvis	Deaths	3.9	3.4	1.15x	2.8 to 5.3	2020-2024
Pancreas	New cases	15.8	13.9	1.14x	13.5 to 18.4	2019-2023
Non-Hodgkin lymphoma	New cases	21	18.5	1.14x	18.2 to 24	2019-2023
Childhood cancer (under 15)	New cases	18.5	16.4	1.13x	12.5 to 26.2	2019-2023
Kidney & renal pelvis	New cases	20.1	17.9	1.12x	17.4 to 23	2019-2023
All cancer	New cases	507.8	453.4	1.12xSignificant	494.2 to 521.8	2019-2023
Lung & bronchus	Deaths	33.8	30.2	1.12xSignificant	30.5 to 37.3	2020-2024
Brain & nervous system	Deaths	4.7	4.4	1.07x	3.5 to 6.2	2020-2024
Non-Hodgkin lymphoma	Deaths	5.1	4.8	1.06x	3.8 to 6.6	2020-2024
Liver & bile duct	New cases	9.2	8.7	1.06x	7.5 to 11.2	2019-2023
Esophagus	Deaths	3.9	3.7	1.05x	2.8 to 5.3	2020-2024
All cancer	Deaths	148.5	143.2	1.04x	141.4 to 155.9	2020-2024
Pancreas	Deaths	11.7	11.3	1.04x	9.8 to 13.9	2020-2024
Esophagus	New cases	4.7	4.6	1.02x	3.5 to 6.2	2019-2023
Leukemia	New cases	14.2	14.5	0.98x	11.9 to 16.8	2019-2023
Liver & bile duct	Deaths	6.4	6.6	0.97x	5 to 8.1	2020-2024
Stomach	New cases	6.3	6.6	0.95x	4.9 to 8.1	2019-2023
Bladder	Deaths	3.9	4.1	0.95x	2.9 to 5.3	2020-2024
Leukemia	Deaths	5	5.7	0.88x	3.8 to 6.6	2020-2024
Bladder	New cases	15.5	18.7	0.83x	13.2 to 18	2019-2023
Stomach	Deaths	1.9	2.7	0.7x	1.1 to 2.9	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 Scott County
Measure	County	U.S. median	Difference	Unit
Premature death	7,235.5	9,842.6	-26%	years of life lost before age 75 per 100,000
Life expectancy	77.5	75.3	+3%	years
Child mortality	36.8	59.8	-38%	deaths under age 18 per 100,000
Infant mortality	3.6	6.2	-43%	deaths under age 1 per 1,000 live births
Injury deaths	75	96.9	-23%	deaths per 100,000
Drug overdose deaths	17.1	28.6	-40%	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.

Formaldehyde16.82 per million
Carbon Tetrachloride2.97 per million
Acetaldehyde1.54 per million
Benzene1.09 per million

EPA Air Quality Index 2025

Monitored on 365 days: 215 good, 2 unhealthy for sensitive groups or worse. Median AQI 46, peak 159.

Regulated facilities, sites and hazards by type

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

Rail grade crossing147
Air permit holder (minor source)141
Gas station (mapped facility)100
NPDES wastewater discharge permit55
Industrial wastewater discharge41
Brownfield property36
Small hazardous waste generator35
Auto repair or body shop (mapped facility)24
Toxic chemical release facility (TRI)20
TRI reporting facility18
Major air pollution source12
Large greenhouse gas emitter9
Large hazardous waste generator9
Hazardous waste transporter6
EPA air quality monitor4
Public airport2
Dry cleaner (mapped facility)2
Heliport2
Biomass power plant2
Wastewater plant (mapped facility)2
Commercial airport1
Crematorium (mapped facility)1
Landfill (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.

Linwood Mining & Minerals Corp Lime Plant, Davenport
Toxic chemical release facility (TRI). Chemicals: Vanadium compounds, Sulfuric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Nickel compounds, Manganese And Manganese Compounds and 4 more. Reports carcinogens. 614,824 lbs released over 5 years.
TRI facility ID 52804LNWDM401EF (U.S. EPA Toxics Release Inventory)
Severity 8.9
Arconic Us Llc, Bettendorf
Toxic chemical release facility (TRI). Chemicals: Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Nitrate compounds (water dissociable; reportable only when in aqueous solution), Chlorine, Manganese and 4 more. Reports carcinogens. 435,013 lbs released over 5 years.
TRI facility ID 52808LMNMCHIGHW (U.S. EPA Toxics Release Inventory)
Severity 8.8
Novelis Alr Aluminum Llc - Novelis Davenport Casting, Davenport
Toxic chemical release facility (TRI). Chemicals: Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Hydrogen fluoride, Zinc compounds, Aluminum (fume or dust) and 4 more. Reports carcinogens. 246,299 lbs released over 5 years.
TRI facility ID 52808NCHLS2101J (U.S. EPA Toxics Release Inventory)
Severity 8.6
Arconic Davenport Llc, Riverdale
TRI reporting facility.
EPA FRS registry ID 110000416005 (U.S. EPA ECHO) Agency record
Severity 8.5
Novelis Alr Aluminum Llc - Novelis Davenport Finishing, Davenport
Toxic chemical release facility (TRI). Chemicals: Certain glycol ethers, Xylene (mixed isomers), 1,2,4-Trimethylbenzene, n-Butyl alcohol and 4 more. Reports carcinogens. 26,432 lbs released over 5 years.
TRI facility ID 52808NCHLS1725R (U.S. EPA Toxics Release Inventory)
Severity 7.9
John Deere Davenport Works, Davenport
Toxic chemical release facility (TRI). Chemicals: Ethylene glycol, Manganese, Nickel, Zinc compounds and 2 more. Reports carcinogens. 12,698 lbs released over 5 years.
TRI facility ID 52808JHNDRHIGHW (U.S. EPA Toxics Release Inventory)
Severity 7.6
Barton Solvents Inc Bettendorf, Bettendorf
Toxic chemical release facility (TRI). Chemicals: Methanol, Toluene, Xylene (mixed isomers), Naphthalene and 4 more. Reports carcinogens. 10,066 lbs released over 5 years.
TRI facility ID 52722BRTNS20436 (U.S. EPA Toxics Release Inventory)
Severity 7.6
Novelis Davenport Casting, Davenport
TRI reporting facility.
EPA FRS registry ID 110000742563 (U.S. EPA ECHO) Agency record
Severity 7.6
Continental Cement Co, Buffalo
Toxic chemical release facility (TRI). Chemicals: Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Ammonia, Manganese compounds, Zinc compounds and 3 more. 805,917 lbs released over 5 years.
TRI facility ID 52804DVNPRHWY22 (U.S. EPA Toxics Release Inventory)
Severity 7.5
Sivyer Steel Casting Llc, Bettendorf
Toxic chemical release facility (TRI). Chemicals: Manganese, Molybdenum trioxide, Lead, Chromium and 1 more. Reports carcinogens. 7,695 lbs released over 5 years.
TRI facility ID 52722SVYRS225S3 (U.S. EPA Toxics Release Inventory)
Severity 7.5
Amsco Inc - Linwood Mining Lime Plant, Davenport
TRI reporting facility. Penalties $23,244.
EPA FRS registry ID 110001323951 (U.S. EPA ECHO) Agency record
Severity 7.2
Novelis Davenport Finishing, Davenport
TRI reporting facility.
EPA FRS registry ID 110000416014 (U.S. EPA ECHO) Agency record
Severity 7
Green America Recycling, Buffalo
TRI reporting facility.
EPA FRS registry ID 110000415989 (U.S. EPA ECHO) Agency record
Severity 6.4
Pb Leiner Usa, Davenport
Toxic chemical release facility (TRI). Chemicals: Ammonia, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Nitric acid. 13,590 lbs released over 5 years.
TRI facility ID 52809GHRML7001B (U.S. EPA Toxics Release Inventory)
Severity 6.2
Kraft Heinz - Davenport, Davenport
Toxic chemical release facility (TRI). Chemicals: Ammonia. 10,000 lbs released over 5 years.
TRI facility ID 5280WKRFTH941GR (U.S. EPA Toxics Release Inventory)
Severity 6.1
Sears Manufacturing Co., Davenport
Toxic chemical release facility (TRI). Chemicals: Diisocyanates, Manganese And Manganese Compounds. 9,956 lbs released over 5 years.
TRI facility ID 52808SRSMN1718S (U.S. EPA Toxics Release Inventory)
Severity 6.1
Davenport Wastewater Treatment Plant, Davenport
NPDES wastewater discharge permit.
EPA FRS registry ID 110010829121 (U.S. EPA ECHO) Agency record
Severity 6
Kraft Heinz - Davenport, Davenport
TRI reporting facility.
EPA FRS registry ID 110070070359 (U.S. EPA ECHO) Agency record
Severity 5.8
Barton Solvents Inc - Bettendorf Facility, Bettendorf
TRI reporting facility.
EPA FRS registry ID 110000415569 (U.S. EPA ECHO) Agency record
Severity 5.8
Arconic Davenport Llc, Riverdale
Major air pollution source.
EPA FRS registry ID 110000416005 (U.S. EPA ECHO) Agency record
Severity 5.8
Pb Leiner Usa, Davenport
TRI reporting facility.
EPA FRS registry ID 110000416032 (U.S. EPA ECHO) Agency record
Severity 5.7
Sears Mfg Co, Davenport
TRI reporting facility.
EPA FRS registry ID 110000416023 (U.S. EPA ECHO) Agency record
Severity 5.5
DAVENPORT, JEFFERSON SCH., Davenport
EPA air quality monitor.
Record ID 191630015 (U.S. EPA AirData)
Severity 5.5
Leclaire City Of Stp, Le Claire
NPDES wastewater discharge permit.
EPA FRS registry ID 110010036576 (U.S. EPA ECHO) Agency record
Severity 5.5
Mt. Joy Mobile Home Park, Davenport
NPDES wastewater discharge permit. Penalties $10,000.
EPA FRS registry ID 110013091475 (U.S. EPA ECHO) Agency record
Severity 5.5

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 Scott 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 Scott 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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