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Owyhee County, Idaho: environmental and disease records

Cancer mortality in Owyhee County is 134 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 132 regulated facilities, sites and hazards inside the county, led by Industrial wastewater discharge (76), NPDES wastewater discharge permit (19), Air permit holder (minor source) (9). 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: 42.8389, -116.2402.

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 Owyhee County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Pancreas	New cases	20.7	13.9	1.49x	11.4 to 34.8	2019-2023
Non-Hodgkin lymphoma	New cases	23.4	18.5	1.26x	13.9 to 37.5	2019-2023
Melanoma of the skin	New cases	29.7	23.8	1.25x	17.7 to 46.8	2019-2023
Kidney & renal pelvis	New cases	20.1	17.9	1.12x	11.1 to 34	2019-2023
All cancer	New cases	449.9	453.4	0.99x	402.9 to 501	2019-2023
Lung & bronchus	New cases	50.6	51.8	0.98x	36.5 to 69.1	2019-2023
All cancer	Deaths	134	143.2	0.94x	109.2 to 163.1	2020-2024
Lung & bronchus	Deaths	23.4	30.2	0.77x	14.1 to 37.1	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 Owyhee County
Measure	County	U.S. median	Difference	Unit
Premature death	10,616.1	9,842.6	+8%	years of life lost before age 75 per 100,000
Life expectancy	75.2	75.3	-0%	years
Child mortality	74.1	59.8	+24%	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	97.4	96.9	+0%	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.

Formaldehyde12.46 per million
Carbon Tetrachloride2.75 per million
Acetaldehyde1.41 per million
Naphthalene1.19 per million

EPA Air Quality Index

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

Regulated facilities, sites and hazards by type

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

Industrial wastewater discharge76
NPDES wastewater discharge permit19
Air permit holder (minor source)9
Public airport9
Gas station (mapped facility)3
TRI reporting facility3
Toxic chemical release facility (TRI)3
Brownfield property2
Large hazardous waste generator2
Solar power plant2
Auto repair or body shop (mapped facility)1
Hazardous waste transporter1
Landfill (mapped facility)1
Hydroelectric 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.

Us Ecology Idaho Inc, Grand View
TRI reporting facility. Penalties $118,318.
EPA FRS registry ID 110046358133 (U.S. EPA ECHO) Agency record
Severity 10
Us Ecology Idaho Inc., Grand View
Toxic chemical release facility (TRI). Chemicals: Zinc compounds, Ethylene glycol, Lead, Lead And Lead Compounds and 4 more. Reports carcinogens. Reports PFAS. 13,161,772 lbs released over 5 years.
TRI facility ID 83624NVRSF1012M (U.S. EPA Toxics Release Inventory)
Severity 10
Us Ecology Idaho Inc, Grand View
Large hazardous waste generator. Penalties $118,318.
EPA FRS registry ID 110046358133 (U.S. EPA ECHO) Agency record
Severity 7
Us Ecology Idaho Inc, Grand View
NPDES wastewater discharge permit. Penalties $118,318.
EPA FRS registry ID 110046358133 (U.S. EPA ECHO) Agency record
Severity 7
Homedale Beam & Deck Plant, Homedale
Toxic chemical release facility (TRI). Chemicals: Phenol. 1,088 lbs released over 5 years.
TRI facility ID 83628FLLRK4318P (U.S. EPA Toxics Release Inventory)
Severity 5.3
Homedale Engineered Wood Plant, Homedale
TRI reporting facility.
EPA FRS registry ID 110025317501 (U.S. EPA ECHO) Agency record
Severity 5
Us Ecology Idaho Inc, Grand View
Air permit holder (minor source). Penalties $118,318.
EPA FRS registry ID 110046358133 (U.S. EPA ECHO) Agency record
Severity 5
Us Ecology Idaho Inc, Grand View
Hazardous waste transporter. Penalties $118,318.
EPA FRS registry ID 110046358133 (U.S. EPA ECHO) Agency record
Severity 5
Amvac Chemical, Marsing
Toxic chemical release facility (TRI). Chemicals: Quintozene, Bifenthrin, Hexachlorobenzene, Atrazine and 4 more. Reports carcinogens. 1 lbs released over 5 years.
TRI facility ID 83639GSTFSBRUNE (U.S. EPA Toxics Release Inventory)
Severity 4.7
Marsing Wwtp, Marsing
NPDES wastewater discharge permit.
EPA FRS registry ID 110009725752 (U.S. EPA ECHO) Agency record
Severity 4.5
Diamond Creek Mill, Murphy
NPDES wastewater discharge permit.
EPA FRS registry ID 110044258950 (U.S. EPA ECHO) Agency record
Severity 4.5
Amvac Chemical, Marsing
TRI reporting facility.
EPA FRS registry ID 110000468583 (U.S. EPA ECHO) Agency record
Severity 4.1
Diamond Creek Mill, Murphy
Air permit holder (minor source).
EPA FRS registry ID 110044258950 (U.S. EPA ECHO) Agency record
Severity 4
Homedale Wwtp, Homedale
NPDES wastewater discharge permit.
EPA FRS registry ID 110006776140 (U.S. EPA ECHO) Agency record
Severity 3.5
South Mountain Mine, Murphy
NPDES wastewater discharge permit.
EPA FRS registry ID 110070925864 (U.S. EPA ECHO) Agency record
Severity 3.5
Republic Services Of Homedale, Homedale
NPDES wastewater discharge permit.
EPA FRS registry ID 110071068466 (U.S. EPA ECHO) Agency record
Severity 3.5
Imc Nomad, Marsing
NPDES wastewater discharge permit.
EPA FRS registry ID 110067024892 (U.S. EPA ECHO) Agency record
Severity 3.3
Cahill Oil, Homedale
Brownfield property.
EPA FRS registry ID 110038749414 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Goodman Oil Grand View, Grand View
Brownfield property.
EPA FRS registry ID 110071966030 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Amvac Chemical, Marsing
Large hazardous waste generator.
EPA FRS registry ID 110000468583 (U.S. EPA ECHO) Agency record
Severity 3
Kinross Delamar Mine, Murphy
NPDES wastewater discharge permit.
EPA FRS registry ID 110007514804 (U.S. EPA ECHO) Agency record
Severity 2.3
Murphy, Murphy
Public airport. O.
Record ID 1U3 (FAA / U.S. DOT)
Severity 2
Murphy Hot Springs, Three Creek
Public airport. O.
Record ID 3U0 (FAA / U.S. DOT)
Severity 2
Homedale Muni, Homedale
Public airport. O.
Record ID S66 (FAA / U.S. DOT)
Severity 2
Grasmere, Grasmere
Public airport. O.
Record ID U91 (FAA / U.S. DOT)
Severity 2

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 Owyhee 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 Owyhee 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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