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Valley County, Idaho: environmental and disease records

Cancer mortality in Valley County is 103.1 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 319 regulated facilities, sites and hazards inside the county, led by Industrial wastewater discharge (158), NPDES wastewater discharge permit (72), Public airport (29). 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: 44.6837, -115.6575.

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 Valley 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	37.8	23.8	1.59xSignificant	25.5 to 54.9	2019-2023
Bladder	New cases	20.1	18.7	1.07x	12.3 to 32.6	2019-2023
Kidney & renal pelvis	New cases	18.1	17.9	1.01x	10 to 31.2	2019-2023
Non-Hodgkin lymphoma	New cases	16.6	18.5	0.9x	8.6 to 29.9	2019-2023
All cancer	New cases	392.8	453.4	0.87x	352 to 437.8	2019-2023
All cancer	Deaths	103.1	143.2	0.72x	83.5 to 127	2020-2024
Lung & bronchus	New cases	32.5	51.8	0.63x	21.7 to 47.9	2019-2023
Lung & bronchus	Deaths	16.7	30.2	0.55x	9.5 to 28.6	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 Valley County
Measure	County	U.S. median	Difference	Unit
Premature death	5,635.2	9,842.6	-43%	years of life lost before age 75 per 100,000
Life expectancy	83	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	84.8	96.9	-12%	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.

Formaldehyde11.02 per million
Carbon Tetrachloride2.54 per million
Acetaldehyde1.38 per million
Naphthalene1.06 per million

EPA Air Quality Index 2025

Monitored on 352 days: 258 good, 1 unhealthy for sensitive groups or worse. Median AQI 34, peak 104.

Regulated facilities, sites and hazards by type

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

Industrial wastewater discharge158
NPDES wastewater discharge permit72
Public airport29
Rail grade crossing18
Gas station (mapped facility)13
Brownfield property8
Air permit holder (minor source)7
Heliport6
Auto repair or body shop (mapped facility)2
EPA air quality monitor1
Commercial airport1
Hydroelectric plant1
Proposed Superfund site1
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.

Stibnite/Yellow Pine Mining Area, Yellow Pine
Proposed Superfund site. Hazard Ranking System score 50. Proposed NPL Site.
EPA site ID IDD980665459 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 8
Helco Portable Concrete Plant (Donnelly) 302231, Donnelly
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Polycyclic aromatic compounds, Lead And Lead Compounds, Benzo[g,h,i]perylene. Reports carcinogens. 181 lbs released over 5 years.
TRI facility ID 8361WHLCPR99PLA (U.S. EPA Toxics Release Inventory)
Severity 6.2
Cascade Wwtp, Cascade
NPDES wastewater discharge permit. Penalties $7,620.
EPA FRS registry ID 110039969683 (U.S. EPA ECHO) Agency record
Severity 5.3
Jug Mountain Ranch Utilities, Mccall
NPDES wastewater discharge permit.
EPA FRS registry ID 110017376757 (U.S. EPA ECHO) Agency record
Severity 4.5
Tamarack Resort, Donnelly
NPDES wastewater discharge permit.
EPA FRS registry ID 110022430975 (U.S. EPA ECHO) Agency record
Severity 4.3
Boise Cascade Corp, Cascade
NPDES wastewater discharge permit.
EPA FRS registry ID 110028077257 (U.S. EPA ECHO) Agency record
Severity 4.3
Valley Paving And Asphalt - Mccall Facility, Mccall
NPDES wastewater discharge permit. Penalties $17,900.
EPA FRS registry ID 110067174257 (U.S. EPA ECHO) Agency record
Severity 4.3
360 Ranch Subdivision, Mccall
NPDES wastewater discharge permit. Penalties $8,595.
EPA FRS registry ID 110071235205 (U.S. EPA ECHO) Agency record
Severity 4.3
Mccall Wwtp, Mccall
NPDES wastewater discharge permit.
EPA FRS registry ID 110009725814 (U.S. EPA ECHO) Agency record
Severity 4
Arling Pit, Donnelly
NPDES wastewater discharge permit.
EPA FRS registry ID 110071070309 (U.S. EPA ECHO) Agency record
Severity 4
Mdsd Staff Housing, Mccall
NPDES wastewater discharge permit. Penalties $6,600.
EPA FRS registry ID 110071439047 (U.S. EPA ECHO) Agency record
Severity 3.8
Donnelly Lot 123, Donnelly
Brownfield property.
EPA FRS registry ID 110038747292 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Cascade Dump, Cascade
Brownfield property.
EPA FRS registry ID 110038749423 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
South Log Yard, Cascade
Brownfield property.
EPA FRS registry ID 110038754194 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Mccall Golf Course Maintenance, Mccall
Brownfield property.
EPA FRS registry ID 110038754504 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Colorado St. Former Unregulated Dump, Mccall
Brownfield property.
EPA FRS registry ID 110071967220 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Riverfront Park, Mccall
Brownfield property.
EPA FRS registry ID 110071967443 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Donnelly Industrial Site, Donnelly
Brownfield property.
EPA FRS registry ID 110071969975 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Mccall - Old City Dump, Mccall
Brownfield property.
EPA FRS registry ID 110071970416 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
St. LukeâS Mccall Medical Center-Offsite Roadways, Mccall
NPDES wastewater discharge permit. Penalties $2,200.
EPA FRS registry ID 110070250941 (U.S. EPA ECHO) Agency record
Severity 2.5
Mccall River Ranch - Phase 3, Mccall
NPDES wastewater discharge permit. Penalties $4,140.
EPA FRS registry ID 110070882844 (U.S. EPA ECHO) Agency record
Severity 2.5
The River District, Cascade
NPDES wastewater discharge permit. Penalties $275.
EPA FRS registry ID 110070882906 (U.S. EPA ECHO) Agency record
Severity 2.5
Antonette Estates, Cascade
NPDES wastewater discharge permit. Penalties $6,500.
EPA FRS registry ID 110071095559 (U.S. EPA ECHO) Agency record
Severity 2.5
River District Phases 3a & 4, Cascade
NPDES wastewater discharge permit.
EPA FRS registry ID 110071850278 (U.S. EPA ECHO) Agency record
Severity 2.5
Cascade Pit, Cascade
NPDES wastewater discharge permit.
EPA FRS registry ID 110071069225 (U.S. EPA ECHO) Agency record
Severity 2.3

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 Valley 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 Valley 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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