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Inyo County, California: environmental and disease records

Cancer mortality in Inyo County is 132.2 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 204 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (44), Small hazardous waste generator (35), Gas station (mapped facility) (28). One correctional facility operates in the county. 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: 36.6265, -117.5138.

How this county ranks in California

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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 Inyo 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	36.5	23.8	1.53xSignificant	26.8 to 49	2019-2023
Liver & bile duct	New cases	11.1	8.7	1.28x	6.2 to 18.8	2019-2023
Non-Hodgkin lymphoma	New cases	19.4	18.5	1.05x	12.6 to 29	2019-2023
Kidney & renal pelvis	New cases	18.6	17.9	1.04x	12.3 to 27.6	2019-2023
All cancer	Deaths	132.2	143.2	0.92x	114.4 to 152.5	2020-2024
Bladder	New cases	16.4	18.7	0.88x	10.7 to 24.6	2019-2023
Pancreas	New cases	11.2	13.9	0.81x	6.7 to 18.5	2019-2023
All cancer	New cases	361.6	453.4	0.8x	329.9 to 395.8	2019-2023
Leukemia	New cases	10.4	14.5	0.72x	5.6 to 18.2	2019-2023
Lung & bronchus	Deaths	17	30.2	0.56x	11.5 to 25.2	2020-2024
Lung & bronchus	New cases	25.7	51.8	0.5x	18.5 to 35.5	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 Inyo County
Measure	County	U.S. median	Difference	Unit
Premature death	10,430.9	9,842.6	+6%	years of life lost before age 75 per 100,000
Life expectancy	76.6	75.3	+2%	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	99.2	96.9	+2%	deaths per 100,000
Drug overdose deaths	50.2	28.6	+76%	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.

Formaldehyde10.12 per million
Carbon Tetrachloride2.54 per million
Acetaldehyde1 per million
Pahpom0.73 per million

EPA Air Quality Index 2025

Monitored on 365 days: 136 good, 13 unhealthy for sensitive groups or worse. Median AQI 55, peak 411.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit44
Small hazardous waste generator35
Gas station (mapped facility)28
EPA air quality monitor17
Industrial wastewater discharge16
Hydroelectric plant10
Wastewater plant (mapped facility)10
Large hazardous waste generator8
Public airport6
Landfill (mapped facility)6
Auto repair or body shop (mapped facility)4
Brownfield property4
Hazardous waste transporter4
Geothermal plant3
Major air pollution source2
Solar power plant2
Commercial airport1
Correctional facility (prison or jail)1
Heliport1
Scrapyard (mapped facility)1
TRI reporting facility1

Highest-severity records

The 25 records with the highest Envyrofax severity in the county, with the agency identifier to cite in a records request.

Dv Natural Resources, Ballarat
Major air pollution source.
EPA FRS registry ID 110055598134 (U.S. EPA ECHO) Agency record
Severity 6.5
Bishop Tribe EMO, Bishop
EPA air quality monitor.
Record ID 060271023 (U.S. EPA AirData)
Severity 6
Bishop, Bishop
Commercial airport. O.
Record ID BIH (FAA / U.S. DOT)
Severity 5
Stn.1 Big Pine Paiute site, Big Pine
EPA air quality monitor.
Record ID 060271033 (U.S. EPA AirData)
Severity 4.1
Cr Briggs Gold Mine, Trona
TRI reporting facility.
EPA FRS registry ID 110000602232 (U.S. EPA ECHO) Agency record
Severity 4
WMRC/NCORE
EPA air quality monitor.
Record ID 060270002 (U.S. EPA AirData)
Severity 3.5
Fish Springs Fish Hatchery, Big Pine
NPDES wastewater discharge permit.
EPA FRS registry ID 110010058114 (U.S. EPA ECHO) Agency record
Severity 3.5
Coso Operating Company Llc, Little Lake
Major air pollution source.
EPA FRS registry ID 110013331484 (U.S. EPA ECHO) Agency record
Severity 3.5
Keeler, Keeler
EPA air quality monitor.
Record ID 060271003 (U.S. EPA AirData)
Severity 3.2
Lone Pine Paiute-Shoshone Reservation, Lone Pine
EPA air quality monitor.
Record ID 060271018 (U.S. EPA AirData)
Severity 3.1
Mt. Whitney Fish Hatchery, Independence
Brownfield property.
EPA FRS registry ID 110060374250 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Ppg Industries Bartlett Plant, Cartago
Brownfield property.
EPA FRS registry ID 110065910198 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Church Square Parking Lot, Bishop
Brownfield property.
EPA FRS registry ID 110071965820 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Wye Road Property, Bishop
Brownfield property.
EPA FRS registry ID 110071981877 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Cr Briggs Gold Mine, Trona
Large hazardous waste generator.
EPA FRS registry ID 110000602232 (U.S. EPA ECHO) Agency record
Severity 3
Caltrans Bishop Maint Station, Bishop
Large hazardous waste generator.
EPA FRS registry ID 110002805297 (U.S. EPA ECHO) Agency record
Severity 3
Coso Operating Company, Llc, Little Lake
Large hazardous waste generator.
EPA FRS registry ID 110008280270 (U.S. EPA ECHO) Agency record
Severity 3
Pacific Bell, Death Valley
Large hazardous waste generator.
EPA FRS registry ID 110008295086 (U.S. EPA ECHO) Agency record
Severity 3
La Department Water & Power, Bishop
Large hazardous waste generator.
EPA FRS registry ID 110018968107 (U.S. EPA ECHO) Agency record
Severity 3
Bishop Creek Plant 4, Bishop
Large hazardous waste generator.
EPA FRS registry ID 110039567607 (U.S. EPA ECHO) Agency record
Severity 3
Independence Yard, Independence
Large hazardous waste generator.
EPA FRS registry ID 110042272796 (U.S. EPA ECHO) Agency record
Severity 3
Bishop Water Yard, Bishop
Large hazardous waste generator.
EPA FRS registry ID 110055879081 (U.S. EPA ECHO) Agency record
Severity 3
Global Pumice Llc, Olancha
NPDES wastewater discharge permit.
EPA FRS registry ID 110070093867 (U.S. EPA ECHO) Agency record
Severity 2.5
United Parcel Service - Cabih, Bishop
Small hazardous waste generator. Penalties $5,300,000.
EPA FRS registry ID 110070452909 (U.S. EPA ECHO) Agency record
Severity 2.5
City Of Bishop - Pw, Bishop
NPDES wastewater discharge permit.
EPA FRS registry ID 110070454639 (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.

09 353204 Towne Pass Curve Correction, Panamint Springs
EPA FRS registry ID
xda5f4a6f8b1be1352922793bd998c911
Wastewater permit
Yes
EPA detailed facility report

Discovery / public records

Records to request for Inyo County

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