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Blaine County, Idaho: environmental and disease records

Cancer mortality in Blaine County is 88.5 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 222 regulated facilities, sites and hazards inside the county, led by Industrial wastewater discharge (114), NPDES wastewater discharge permit (55), Air permit holder (minor source) (10). 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: 43.3049, -113.8783.

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 Blaine 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	64.6	23.8	2.71xSignificant	53.3 to 78	2019-2023
Non-Hodgkin lymphoma	New cases	24.2	18.5	1.31x	17 to 33.6	2019-2023
Leukemia	New cases	16.9	14.5	1.17x	11.2 to 24.9	2019-2023
All cancer	New cases	471.1	453.4	1.04x	438.5 to 505.7	2019-2023
Thyroid	New cases	10.4	13	0.8x	5.8 to 17.5	2019-2023
Bladder	New cases	14.7	18.7	0.79x	9.7 to 22	2019-2023
Pancreas	Deaths	8.8	11.3	0.78x	5.2 to 14.7	2020-2024
Pancreas	New cases	10.7	13.9	0.77x	6.5 to 17.1	2019-2023
Kidney & renal pelvis	New cases	13	17.9	0.73x	7.7 to 20.7	2019-2023
All cancer	Deaths	88.5	143.2	0.62x	75.5 to 103.5	2020-2024
Lung & bronchus	New cases	24.9	51.8	0.48x	18.2 to 33.6	2019-2023
Lung & bronchus	Deaths	9	30.2	0.3x	5.3 to 14.7	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 Blaine County
Measure	County	U.S. median	Difference	Unit
Premature death	4,706.7	9,842.6	-52%	years of life lost before age 75 per 100,000
Life expectancy	85.3	75.3	+13%	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	76.7	96.9	-21%	deaths per 100,000
Drug overdose deaths	13.7	28.6	-52%	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.

Formaldehyde9.53 per million
Carbon Tetrachloride2.46 per million
Acetaldehyde1.18 per million
Pahpom0.93 per million

EPA Air Quality Index 2025

Monitored on 350 days: 338 good, 0 unhealthy for sensitive groups or worse. Median AQI 17, peak 75.

Regulated facilities, sites and hazards by type

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

Industrial wastewater discharge114
NPDES wastewater discharge permit55
Air permit holder (minor source)10
Public airport9
Gas station (mapped facility)9
Rail grade crossing9
Brownfield property3
Heliport3
Auto repair or body shop (mapped facility)2
Hydroelectric plant2
EPA air quality monitor1
Commercial airport1
Landfill (mapped facility)1
TRI reporting facility1
Toxic chemical release facility (TRI)1
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.

Friedman Meml, Hailey
Commercial airport. O.
Record ID SUN (FAA / U.S. DOT)
Severity 5
Ketchum Sun Valley Wwtp, Ketchum
NPDES wastewater discharge permit.
EPA FRS registry ID 110010027372 (U.S. EPA ECHO) Agency record
Severity 4.8
Rocky Mountain Hardware Hailey, Hailey
TRI reporting facility.
EPA FRS registry ID 110015679194 (U.S. EPA ECHO) Agency record
Severity 4.5
Hailey Woodside Wwtf, Hailey
NPDES wastewater discharge permit.
EPA FRS registry ID 110010027381 (U.S. EPA ECHO) Agency record
Severity 4.5
Rocky Mountain Hardware Inc. (Hailey), Hailey
Toxic chemical release facility (TRI). Chemicals: Copper And Copper Compounds, Manganese And Manganese Compounds, Zinc compounds. 56 lbs released over 5 years.
TRI facility ID 83333RCKYM1030A (U.S. EPA Toxics Release Inventory)
Severity 4.3
Hartman Residence, Sun Valley
NPDES wastewater discharge permit. Penalties $48,600.
EPA FRS registry ID 110071425750 (U.S. EPA ECHO) Agency record
Severity 4.3
Kendall Residence, Hailey
NPDES wastewater discharge permit. Penalties $5,400.
EPA FRS registry ID 110071539056 (U.S. EPA ECHO) Agency record
Severity 4.3
Idaho Department Of Fish And Game - Hayspur Fish Hatchery, Bellevue
NPDES wastewater discharge permit.
EPA FRS registry ID 110070694602 (U.S. EPA ECHO) Agency record
Severity 3.8
Carey Wwtp, Carey
NPDES wastewater discharge permit.
EPA FRS registry ID 110010026836 (U.S. EPA ECHO) Agency record
Severity 3.3
Howard Preserve, Bellevue
Brownfield property.
EPA FRS registry ID 110042232562 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Lions Park, Hailey
Brownfield property.
EPA FRS registry ID 110044764449 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Silver Valley, Sun Valley
Brownfield property.
EPA FRS registry ID 110060752564 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Walker Sand And Gravel, Bellevue
NPDES wastewater discharge permit.
EPA FRS registry ID 110018923405 (U.S. EPA ECHO) Agency record
Severity 2.5
128 Saddle Road Townhomes, Ketchum
NPDES wastewater discharge permit. Penalties $10,058.
EPA FRS registry ID 110070941340 (U.S. EPA ECHO) Agency record
Severity 2.5
Imc Ketchum, Ketchum
NPDES wastewater discharge permit.
EPA FRS registry ID 110067016491 (U.S. EPA ECHO) Agency record
Severity 2
Bellevue Source, Bellevue
NPDES wastewater discharge permit.
EPA FRS registry ID 110071946244 (U.S. EPA ECHO) Agency record
Severity 2
Hollow Top, Carey
Public airport. O.
Record ID 0U7 (FAA / U.S. DOT)
Severity 2
Bear Trap, Minidoka
Public airport. O.
Record ID 1U0 (FAA / U.S. DOT)
Severity 2
Coxs Well, Atomic City
Public airport. O.
Record ID U48 (FAA / U.S. DOT)
Severity 2
Carey, Carey
Public airport. O.
Record ID U65 (FAA / U.S. DOT)
Severity 2
Smiley Creek, Smiley Creek
Public airport. O.
Record ID U87 (FAA / U.S. DOT)
Severity 2
Wastewater Plant
Wastewater plant (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/1087790308 (OpenStreetMap contributors) Agency record
Severity 2
Landfill
Landfill (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/883297214 (OpenStreetMap contributors) Agency record
Severity 2
Mid-Valley Sewer Company Wwtp, Ketchum
NPDES wastewater discharge permit.
EPA FRS registry ID 110010027041 (U.S. EPA ECHO) Agency record
Severity 1.8
Glendale Construction, Bellevue
NPDES wastewater discharge permit.
EPA FRS registry ID 110070055130 (U.S. EPA ECHO) Agency record
Severity 1.8

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 Blaine 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 Blaine 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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