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Teton County, Wyoming: environmental and disease records

Cancer mortality in Teton County is 85 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 101 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (48), Gas station (mapped facility) (21), EPA air quality monitor (5). EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 10 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: 43.9417, -110.55.

How this county ranks in Wyoming

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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 Teton 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	47.6	23.8	2xSignificant	36.7 to 61	2019-2023
Non-Hodgkin lymphoma	New cases	25.1	18.5	1.36x	17.4 to 35.4	2019-2023
Bladder	New cases	17.3	18.7	0.93x	11.1 to 25.9	2019-2023
All cancer	New cases	393.5	453.4	0.87x	361.2 to 428.3	2019-2023
Kidney & renal pelvis	New cases	14.2	17.9	0.79x	8.6 to 22.4	2019-2023
Pancreas	New cases	10.6	13.9	0.76x	6 to 17.8	2019-2023
All cancer	Deaths	85	143.2	0.59x	70 to 102.5	2020-2024
Lung & bronchus	New cases	17.8	51.8	0.34x	11.5 to 26.6	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 Teton County
Measure	County	U.S. median	Difference	Unit
Premature death	4,173.6	9,842.6	-58%	years of life lost before age 75 per 100,000
Life expectancy	87.6	75.3	+16%	years
Child mortality	66.9	59.8	+12%	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	54.7	96.9	-44%	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: 10 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

Formaldehyde9.03 per million
Carbon Tetrachloride2.41 per million
Acetaldehyde0.92 per million
Naphthalene0.63 per million

EPA Air Quality Index 2025

Monitored on 365 days: 310 good, 0 unhealthy for sensitive groups or worse. Median AQI 44, peak 90.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit48
Gas station (mapped facility)21
EPA air quality monitor5
Auto repair or body shop (mapped facility)5
Heliport5
Air permit holder (minor source)4
Small hazardous waste generator3
Public airport2
Oil-fired power plant2
Toxic chemical release facility (TRI)2
Commercial airport1
Industrial wastewater discharge1
Landfill (mapped facility)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.

Us Natl Park Service Grand Teton National Park (Grte), Moose
Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 237 lbs released over 5 years.
TRI facility ID 83012SNTLPPBX17 (U.S. EPA Toxics Release Inventory)
Severity 6.3
Us Natl Park Service Yellowstone National Park, Yellowstone National Park
Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 204 lbs released over 5 years.
TRI facility ID 82190SDYLLBOX16 (U.S. EPA Toxics Release Inventory)
Severity 6.3
Jackson Hole, Jackson
Commercial airport. O.
Record ID JAC (FAA / U.S. DOT)
Severity 5
Granite Hot Springs Pool, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110063613273 (U.S. EPA ECHO) Agency record
Severity 4.3
Melody Ranch - Water Supply Project, Jackson
NPDES wastewater discharge permit.
EPA FRS registry ID 110071711201 (U.S. EPA ECHO) Agency record
Severity 4.3
Lake (Wy), Yellowstone
Oil-fired power plant.
Record ID 7039 (U.S. Energy Information Administration)
Severity 4
Old Faithful, Yellowstone
Oil-fired power plant.
Record ID 2196 (U.S. Energy Information Administration)
Severity 4
Astoria Hot Springs Park, Jackson
NPDES wastewater discharge permit.
EPA FRS registry ID 110070867915 (U.S. EPA ECHO) Agency record
Severity 4
Jackson Wastewater Lagoon, Jackson
NPDES wastewater discharge permit.
EPA FRS registry ID 110055197549 (U.S. EPA ECHO) Agency record
Severity 3.3
Srmhp Mbr, (Unknown City)
NPDES wastewater discharge permit.
EPA FRS registry ID 110058916794 (U.S. EPA ECHO) Agency record
Severity 3.3
Yellowstone National Park - Mammoth Bone Yard, Yellowstone National Park
Small hazardous waste generator.
EPA FRS registry ID 110071133940 (U.S. EPA ECHO) Agency record
Severity 3
Jackson National Fish Hatchery, Jackson
NPDES wastewater discharge permit.
EPA FRS registry ID 110071896504 (U.S. EPA ECHO) Agency record
Severity 3
Jackson Hole, Jackson
NPDES wastewater discharge permit.
EPA FRS registry ID 110055190476 (U.S. EPA ECHO) Agency record
Severity 2.8
Kudar Well, (Unknown City)
NPDES wastewater discharge permit.
EPA FRS registry ID 110071955505 (U.S. EPA ECHO) Agency record
Severity 2.8
Rehabilitate Old Faithful Water Treatment System, Yellowstone National Park
NPDES wastewater discharge permit.
EPA FRS registry ID 110071993211 (U.S. EPA ECHO) Agency record
Severity 2.5
Snow King Mountain Resort Improvement Project (2022), Jackson
NPDES wastewater discharge permit.
EPA FRS registry ID 110070930479 (U.S. EPA ECHO) Agency record
Severity 2.3
Atwood Residence Basement Sump Pump, Wilson
NPDES wastewater discharge permit.
EPA FRS registry ID 110071951854 (U.S. EPA ECHO) Agency record
Severity 2.3
3 Creek Ranch, (Unknown City)
NPDES wastewater discharge permit.
EPA FRS registry ID 110055373260 (U.S. EPA ECHO) Agency record
Severity 2
Melody Ranch 2025 Water System Improvements, Jackson
NPDES wastewater discharge permit.
EPA FRS registry ID 110072081932 (U.S. EPA ECHO) Agency record
Severity 2
Wastewater Plant
Wastewater plant (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/1242387291 (OpenStreetMap contributors) Agency record
Severity 2
Landfill
Landfill (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/341004459 (OpenStreetMap contributors) Agency record
Severity 2
Yellowstone National Park - Old Faithful Snow Lodge
EPA air quality monitor.
Record ID 560391013 (U.S. EPA AirData)
Severity 1.9
Grand Targhee Resort, (Unknown City)
NPDES wastewater discharge permit.
EPA FRS registry ID 110055176535 (U.S. EPA ECHO) Agency record
Severity 1.8
Jackson Project Levee Rehabilitation & Repairs (2021), Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110055199770 (U.S. EPA ECHO) Agency record
Severity 1.8
Gregory Lane, Jackson
NPDES wastewater discharge permit.
EPA FRS registry ID 110072187578 (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 Teton County

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