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Lyon County, Iowa: environmental and disease records

Cancer mortality in Lyon County is 125.4 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 110 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (32), Rail grade crossing (30), Air permit holder (minor source) (16). 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: 43.3808, -96.191.

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 Lyon 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	46.3	23.8	1.95xSignificant	30.7 to 66.9	2019-2023
Leukemia	New cases	21.1	14.5	1.46x	12 to 34.8	2019-2023
Bladder	New cases	25	18.7	1.34x	14.9 to 39.6	2019-2023
Non-Hodgkin lymphoma	New cases	21.6	18.5	1.17x	12.2 to 35.8	2019-2023
All cancer	New cases	514	453.4	1.13xSignificant	461.9 to 570.6	2019-2023
Kidney & renal pelvis	New cases	19.8	17.9	1.11x	11 to 33.4	2019-2023
All cancer	Deaths	125.4	143.2	0.88x	102.1 to 152.8	2020-2024
Lung & bronchus	New cases	39.9	51.8	0.77x	27.7 to 56.3	2019-2023
Lung & bronchus	Deaths	19.9	30.2	0.66x	11.6 to 32.5	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 Lyon County
Measure	County	U.S. median	Difference	Unit
Premature death	4,025.1	9,842.6	-59%	years of life lost before age 75 per 100,000
Life expectancy	82.5	75.3	+10%	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	47	96.9	-51%	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.

Formaldehyde13.36 per million
Carbon Tetrachloride2.92 per million
Acetaldehyde1.13 per million
Benzene0.69 per million

EPA Air Quality Index

No EPA air quality monitor reports daily AQI for this county.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit32
Rail grade crossing30
Air permit holder (minor source)16
Industrial wastewater discharge13
Gas station (mapped facility)11
Major air pollution source2
Public airport1
Commercial airport1
Large hazardous waste generator1
Small hazardous waste generator1
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.

Doon City Of Stp, Doon
NPDES wastewater discharge permit. Penalties $2,000.
EPA FRS registry ID 110010036353 (U.S. EPA ECHO) Agency record
Severity 5
Novartis Animal Health Us Inc, Larchwood
NPDES wastewater discharge permit.
EPA FRS registry ID 110000789656 (U.S. EPA ECHO) Agency record
Severity 4.3
Rock Rapids, Rock Rapids
Oil-fired power plant.
Record ID 1181 (U.S. Energy Information Administration)
Severity 4
Novartis Animal Health Us Inc, Larchwood
Air permit holder (minor source).
EPA FRS registry ID 110000789656 (U.S. EPA ECHO) Agency record
Severity 3.8
Nustar Pipeline Op Partnership Lp - Rock Rapids, Rock Rapids
Major air pollution source.
EPA FRS registry ID 110002439237 (U.S. EPA ECHO) Agency record
Severity 3.5
Gevo Nw Iowa Rng, Llc (Rng Facility), Doon
Major air pollution source.
EPA FRS registry ID 110070936853 (U.S. EPA ECHO) Agency record
Severity 3.5
Diversified Industries Dba Sudenga Industrial, George
Large hazardous waste generator.
EPA FRS registry ID 110000414285 (U.S. EPA ECHO) Agency record
Severity 3
Nustar Pipeline Op Partnership Lp - Rock Rapids, Rock Rapids
NPDES wastewater discharge permit.
EPA FRS registry ID 110002439237 (U.S. EPA ECHO) Agency record
Severity 3
Lester City Of Stp, Lester
NPDES wastewater discharge permit.
EPA FRS registry ID 110010036139 (U.S. EPA ECHO) Agency record
Severity 3
Doon City Of Stp, Doon
Industrial wastewater discharge. Significant/Category I Noncompliance.
NPDES permit IA0023736: (U.S. EPA NPDES)
Severity 3
Larchwood City Of Stp, Larchwood
Industrial wastewater discharge. No Violation Identified.
NPDES permit IA0047333: (U.S. EPA NPDES)
Severity 2.9
Lester City Of Stp, Lester
Industrial wastewater discharge. Violation Identified.
NPDES permit IA0026620: (U.S. EPA NPDES)
Severity 2.7
Rock River Feedyards, Inc., Rock Rapids
NPDES wastewater discharge permit. Penalties $5,000.
EPA FRS registry ID 110020139973 (U.S. EPA ECHO) Agency record
Severity 2.5
Larchwood City Of Stp, Larchwood
NPDES wastewater discharge permit.
EPA FRS registry ID 110039690956 (U.S. EPA ECHO) Agency record
Severity 2.3
Alvord City Of Stp, Alvord
NPDES wastewater discharge permit.
EPA FRS registry ID 110010032703 (U.S. EPA ECHO) Agency record
Severity 2
George City Of Stp, George
NPDES wastewater discharge permit.
EPA FRS registry ID 110010034505 (U.S. EPA ECHO) Agency record
Severity 2
Zangger Vintage Airpark, Larchwood
Public airport. O.
Record ID 2VA (FAA / U.S. DOT)
Severity 2
Rock Rapids Muni, Rock Rapids
Commercial airport. O.
Record ID RRQ (FAA / U.S. DOT)
Severity 2
Inwood City Of Stp, Inwood
NPDES wastewater discharge permit.
EPA FRS registry ID 110010035540 (U.S. EPA ECHO) Agency record
Severity 1.8
Rock Rapids City Of Stp, Rock Rapids
NPDES wastewater discharge permit.
EPA FRS registry ID 110043597417 (U.S. EPA ECHO) Agency record
Severity 1.8
Little Rock City Of Stp, Little Rock
NPDES wastewater discharge permit.
EPA FRS registry ID 110010035960 (U.S. EPA ECHO) Agency record
Severity 1.5
Arneva Cattle, Llc, Inwood
NPDES wastewater discharge permit.
EPA FRS registry ID 110024400343 (U.S. EPA ECHO) Agency record
Severity 1.5
John Fluit Jr., Beef Feedlot, Inwood
NPDES wastewater discharge permit.
EPA FRS registry ID 110024400398 (U.S. EPA ECHO) Agency record
Severity 1.5
Beef &Bacon Drive, Inc., Inwood
NPDES wastewater discharge permit.
EPA FRS registry ID 110028273151 (U.S. EPA ECHO) Agency record
Severity 1.5
Groeneweg Livestock Facility, Larchwood
NPDES wastewater discharge permit.
EPA FRS registry ID 110032833799 (U.S. EPA ECHO) Agency record
Severity 1.5

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 Lyon 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 Lyon 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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