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Madison County, Idaho: environmental and disease records

Cancer mortality in Madison County is 111.6 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 210 regulated facilities, sites and hazards inside the county, led by Rail grade crossing (67), Industrial wastewater discharge (60), NPDES wastewater discharge permit (34). 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: 43.7736, -111.6917.

How this county ranks in Idaho

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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 Madison County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Thyroid	New cases	21.5	13	1.65xSignificant	13.7 to 31.9	2019-2023
Non-Hodgkin lymphoma	New cases	24.4	18.5	1.32x	15.8 to 35.6	2019-2023
Melanoma of the skin	New cases	26.7	23.8	1.12x	17.9 to 38.1	2019-2023
Pancreas	New cases	13.7	13.9	0.99x	7.7 to 22.4	2019-2023
All cancer	New cases	406	453.4	0.9x	369.3 to 445.1	2019-2023
Leukemia	New cases	12.2	14.5	0.84x	6.9 to 19.8	2019-2023
Bladder	New cases	15.7	18.7	0.84x	9 to 25	2019-2023
All cancer	Deaths	111.6	143.2	0.78x	92.5 to 133.3	2020-2024
Lung & bronchus	New cases	19.9	51.8	0.38x	12.4 to 30	2019-2023

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 Madison County
Measure	County	U.S. median	Difference	Unit
Premature death	5,017.5	9,842.6	-49%	years of life lost before age 75 per 100,000
Life expectancy	79.1	75.3	+5%	years
Child mortality	37	59.8	-38%	deaths under age 18 per 100,000
Infant mortality	3	6.2	-52%	deaths under age 1 per 1,000 live births
Injury deaths	33.3	96.9	-66%	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.

Formaldehyde12.32 per million
Carbon Tetrachloride2.59 per million
Acetaldehyde1.33 per million
Naphthalene1.28 per million

EPA Air Quality Index

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

Regulated facilities, sites and hazards by type

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

Rail grade crossing67
Industrial wastewater discharge60
NPDES wastewater discharge permit34
Gas station (mapped facility)17
Air permit holder (minor source)16
Auto repair or body shop (mapped facility)6
Small hazardous waste generator3
Major air pollution source1
Commercial airport1
Brownfield property1
Dry cleaner (mapped facility)1
Large greenhouse gas emitter1
Gas power plant1
Wastewater plant (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.

Basic American Foods Rexburg Facility, Rexburg
Major air pollution source.
EPA FRS registry ID 110000468468 (U.S. EPA ECHO) Agency record
Severity 6.3
Basic American Foods Rexburg Facility, Rexburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110000468468 (U.S. EPA ECHO) Agency record
Severity 5.8
Rexburg Wwtp, Rexburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110009726029 (U.S. EPA ECHO) Agency record
Severity 5.8
Basic American Foods Rexburg Facility, Rexburg
Large greenhouse gas emitter.
EPA FRS registry ID 110000468468 (U.S. EPA ECHO) Agency record
Severity 5.3
Rexburg City Water, Rexburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110013061195 (U.S. EPA ECHO) Agency record
Severity 4
Brigham Young University Idaho, Rexburg
Small hazardous waste generator. Penalties $6,719.
EPA FRS registry ID 110001686934 (U.S. EPA ECHO) Agency record
Severity 3.8
Rexburg City Water, Rexburg
Air permit holder (minor source).
EPA FRS registry ID 110013061195 (U.S. EPA ECHO) Agency record
Severity 3.5
Byui Central Energy Facility, Rexburg
Gas power plant.
Record ID 59496 (U.S. Energy Information Administration)
Severity 3
Rexburg - Madison School District Vacant Property, Rexburg
Brownfield property.
EPA FRS registry ID 110071967178 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Teton Pit, Teton
NPDES wastewater discharge permit.
EPA FRS registry ID 110070133823 (U.S. EPA ECHO) Agency record
Severity 2.3
Walmart Supercenter #1878, Rexburg
Small hazardous waste generator.
EPA FRS registry ID 110067046226 (U.S. EPA ECHO) Agency record
Severity 2
Hk Contractors Inc - Teton, Teton
Air permit holder (minor source). Penalties $780.
EPA FRS registry ID 110071369137 (U.S. EPA ECHO) Agency record
Severity 2
Rexburg-Madison County, Rexburg
Commercial airport. O.
Record ID RXE (FAA / U.S. DOT)
Severity 2
D&L Cleaners
Dry cleaner (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID node/5869801261 (OpenStreetMap contributors) Agency record
Severity 2
Wastewater Plant
Wastewater plant (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/370984143 (OpenStreetMap contributors) Agency record
Severity 2
Walters Ready Mix Inc, Rexburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110001805618 (U.S. EPA ECHO) Agency record
Severity 1.5
Artco, Rexburg
Small hazardous waste generator.
EPA FRS registry ID 110021321611 (U.S. EPA ECHO) Agency record
Severity 1.5
Artco, Rexburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110021321611 (U.S. EPA ECHO) Agency record
Severity 1.5
Arbor Cove, Rexburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110070236742 (U.S. EPA ECHO) Agency record
Severity 1.5
Iron Horse-Site Development, Rexburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110071093753 (U.S. EPA ECHO) Agency record
Severity 1.5
Peregrine Townhomes, Sugar City
NPDES wastewater discharge permit.
EPA FRS registry ID 110071177192 (U.S. EPA ECHO) Agency record
Severity 1.5
Yellowstone Resort, Rexburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110071347614 (U.S. EPA ECHO) Agency record
Severity 1.5
Teton River Lofts - Phase 1, Rexburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110071358237 (U.S. EPA ECHO) Agency record
Severity 1.5
Edstrom Construction East Pit, Thornton
NPDES wastewater discharge permit.
EPA FRS registry ID 110071364921 (U.S. EPA ECHO) Agency record
Severity 1.5
10 Ward Lds Church, Rexburg
NPDES wastewater discharge permit.
EPA FRS registry ID 110071438468 (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 Madison County

Idaho 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 Madison County, and their findings.
Idaho vital statistics office
Death certificate counts by cause of death and residence tract or ZIP code, and the years behind the mortality measures above.
Idaho health department, environmental epidemiology
Health consultations or assessments by ATSDR or the state health department covering the county, and any exposure investigations.
Idaho 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.
Idaho 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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