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Fremont County, Idaho: environmental and disease records

Cancer mortality in Fremont County is 131.4 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Pancreas deaths at 1.9 times the U.S. rate. Federal databases place 158 regulated facilities, sites and hazards inside the county, led by Industrial wastewater discharge (56), Rail grade crossing (53), Gas station (mapped facility) (14). One correctional facility operates in the county, at least one with health-based drinking water violations on record. 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: 44.3353, -111.4206.

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 Fremont County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Pancreas	Deaths	21.4	11.3	1.89xSignificant	12.5 to 34.5	2020-2024
Leukemia	New cases	21.5	14.5	1.48x	12.6 to 34.6	2019-2023
Pancreas	New cases	18.3	13.9	1.32x	10.3 to 30.6	2019-2023
Melanoma of the skin	New cases	26.3	23.8	1.11x	15.9 to 41	2019-2023
All cancer	Deaths	131.4	143.2	0.92x	108 to 158.6	2020-2024
All cancer	New cases	357.9	453.4	0.79x	318 to 401.8	2019-2023
Lung & bronchus	Deaths	23.1	30.2	0.76x	14.2 to 36.1	2020-2024
Lung & bronchus	New cases	32	51.8	0.62x	21.2 to 46.8	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 Fremont County
Measure	County	U.S. median	Difference	Unit
Premature death	6,704.3	9,842.6	-32%	years of life lost before age 75 per 100,000
Life expectancy	77.7	75.3	+3%	years
Child mortality	69.8	59.8	+17%	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	89.5	96.9	-8%	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.

Formaldehyde10.58 per million
Carbon Tetrachloride2.56 per million
Acetaldehyde0.99 per million
Pahpom0.69 per million

EPA Air Quality Index

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

Regulated facilities, sites and hazards by type

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

Industrial wastewater discharge56
Rail grade crossing53
Gas station (mapped facility)14
NPDES wastewater discharge permit11
Air permit holder (minor source)10
Auto repair or body shop (mapped facility)5
Hydroelectric plant4
Public airport2
Brownfield property1
Correctional facility (prison or jail)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.

St Anthony Sewage Lagoon, Saint Anthony
NPDES wastewater discharge permit.
EPA FRS registry ID 110039983729 (U.S. EPA ECHO) Agency record
Severity 4.5
Cougar Corner, Saint Anthony
Brownfield property.
EPA FRS registry ID 110028110265 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Stanford Fld, St Anthony
Public airport. O.
Record ID U12 (FAA / U.S. DOT)
Severity 2
Henrys Lake, Island Park
Public airport. O.
Record ID U53 (FAA / U.S. DOT)
Severity 2
Fremont County Landfill
Landfill (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/522187790 (OpenStreetMap contributors) Agency record
Severity 2
O'Reilly Auto Parts, Saint Anthony
NPDES wastewater discharge permit.
EPA FRS registry ID 110071279040 (U.S. EPA ECHO) Agency record
Severity 1.5
Us 20, Intersection Sh-47 Improvements, Ashton
NPDES wastewater discharge permit.
EPA FRS registry ID 110071358999 (U.S. EPA ECHO) Agency record
Severity 1.5
St. Anthony Motors, Saint Anthony
NPDES wastewater discharge permit.
EPA FRS registry ID 110071363371 (U.S. EPA ECHO) Agency record
Severity 1.5
Djc St. Anthony Cottages, Saint Anthony
NPDES wastewater discharge permit.
EPA FRS registry ID 110071501038 (U.S. EPA ECHO) Agency record
Severity 1.5
Exit 343 Interchange, Saint Anthony
NPDES wastewater discharge permit.
EPA FRS registry ID 110071507148 (U.S. EPA ECHO) Agency record
Severity 1.5
Us-20 Exit 343 Interchange, Saint Anthony
NPDES wastewater discharge permit.
EPA FRS registry ID 110071511169 (U.S. EPA ECHO) Agency record
Severity 1.5
Mp 9 To 30.3 Yale-Kilgore Rd, Island Park
NPDES wastewater discharge permit.
EPA FRS registry ID 110071816984 (U.S. EPA ECHO) Agency record
Severity 1.5
Ace Hardware Island Park, Island Park
NPDES wastewater discharge permit.
EPA FRS registry ID 110071994156 (U.S. EPA ECHO) Agency record
Severity 1.5
Last Chance New Wwtp, Island Park
NPDES wastewater discharge permit.
EPA FRS registry ID 110072083579 (U.S. EPA ECHO) Agency record
Severity 1.5
Ashton-Tetonia State Park - Trail, Ashton
NPDES wastewater discharge permit.
EPA FRS registry ID 110072158026 (U.S. EPA ECHO) Agency record
Severity 1.5
Idjc Juvenile Corrections Center, Saint Anthony
Correctional facility (prison or jail).
EPA FRS registry ID 110013059956 (U.S. EPA ECHO + SDWIS) Agency record
Severity 1.4
2900 East/ Ora Street, St Anthony
Rail grade crossing.
Record ID 811829Y (Federal Railroad Administration)
Severity 1.3
800 North, St Anthony
Rail grade crossing.
Record ID 811830T (Federal Railroad Administration)
Severity 1.3
3000 East, St Anthony
Rail grade crossing.
Record ID 811832G (Federal Railroad Administration)
Severity 1.3
Private, Ashton
Rail grade crossing.
Record ID 811835C (Federal Railroad Administration)
Severity 1.3
1000 North, Ashton
Rail grade crossing.
Record ID 811837R (Federal Railroad Administration)
Severity 1.3
3400 East, Ashton
Rail grade crossing.
Record ID 811841F (Federal Railroad Administration)
Severity 1.3
1200 North, Ashton
Rail grade crossing.
Record ID 811844B (Federal Railroad Administration)
Severity 1.3
3500 East, Ashton
Rail grade crossing.
Record ID 811846P (Federal Railroad Administration)
Severity 1.3
Idaho Street, Ashton
Rail grade crossing.
Record ID 811847W (Federal Railroad Administration)
Severity 1.3

Correctional facilities

Prisons, jails and corrections operations with an EPA facility record, and the drinking water and wastewater compliance attached to them.

Idjc Juvenile Corrections Center, Saint Anthony
EPA FRS registry ID
110013059956
Water system
ID7220087
Health-based violations
10 all time, 0 in 5 years
All violations
101
Contaminants cited
Coliform (TCR)
Wastewater permit
None on record
EPA detailed facility report

Discovery / public records

Records to request for Fremont 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 Fremont 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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