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Uinta County, Wyoming: environmental and disease records

Cancer mortality in Uinta County is 135.5 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 150 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (47), Air permit holder (minor source) (19), Gas station (mapped facility) (16). 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: 41.3062, -110.5477.

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 Uinta County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Bladder	New cases	20.2	18.7	1.08x	12.5 to 31.1	2019-2023
All cancer	Deaths	135.5	143.2	0.95x	114.5 to 159.3	2020-2024
Melanoma of the skin	New cases	18	23.8	0.76x	11 to 27.9	2019-2023
All cancer	New cases	337.6	453.4	0.74x	304.1 to 373.8	2019-2023
Lung & bronchus	New cases	27.9	51.8	0.54x	18.9 to 39.8	2019-2023
Lung & bronchus	Deaths	15.5	30.2	0.51x	9.3 to 24.7	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 Uinta County
Measure	County	U.S. median	Difference	Unit
Premature death	10,947	9,842.6	+11%	years of life lost before age 75 per 100,000
Life expectancy	74.9	75.3	-0%	years
Child mortality	65	59.8	+9%	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	99.9	96.9	+3%	deaths per 100,000
Drug overdose deaths	29.2	28.6	+2%	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.

Formaldehyde9.36 per million
Carbon Tetrachloride2.41 per million
Acetaldehyde0.66 per million
Naphthalene0.63 per million

EPA Air Quality Index 2025

Monitored on 269 days: 269 good, 0 unhealthy for sensitive groups or worse. Median AQI 9, peak 50.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit47
Air permit holder (minor source)19
Gas station (mapped facility)16
Rail grade crossing14
Small hazardous waste generator12
Hazardous waste transporter6
Major air pollution source5
Brownfield property5
Toxic chemical release facility (TRI)5
TRI reporting facility4
Auto repair or body shop (mapped facility)3
Wind power plant3
EPA air quality monitor2
Commercial airport2
Large greenhouse gas emitter2
Large hazardous waste generator2
Heliport1
Landfill (mapped facility)1
Scrapyard (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.

Carter Creek Gas Plant, Evanston
Toxic chemical release facility (TRI). Chemicals: Hydrogen sulfide, Benzene, Ethylene glycol, Diethanolamine. Reports carcinogens. 207,699 lbs released over 5 years.
TRI facility ID 8293WCRTRC35MIN (U.S. EPA Toxics Release Inventory)
Severity 8.6
Silver Eagle Refining-Evanston, Evanston
Toxic chemical release facility (TRI). Chemicals: n-Hexane, Toluene, Xylene (mixed isomers), Benzene and 4 more. Reports carcinogens. 40,403 lbs released over 5 years.
TRI facility ID 82931XBWHYI80EX (U.S. EPA Toxics Release Inventory)
Severity 8
Reladyne West Llc, Evanston
Toxic chemical release facility (TRI). Chemicals: Toluene, Xylene (mixed isomers), Polycyclic aromatic compounds, n-Hexane and 4 more. Reports carcinogens. 1,456 lbs released over 5 years.
TRI facility ID 8293WRLDYN1ADMI (U.S. EPA Toxics Release Inventory)
Severity 6.9
Mitsubishi Chemical Carbon Fiber & Composites, Evanston
Toxic chemical release facility (TRI). Chemicals: Hydrogen cyanide, Ammonia. 9,542 lbs released over 5 years.
TRI facility ID 82930SGLCR1375U (U.S. EPA Toxics Release Inventory)
Severity 6.1
Carter Creek Gas Plant, Evanston
TRI reporting facility.
EPA FRS registry ID 110071434105 (U.S. EPA ECHO) Agency record
Severity 6.1
Silver Eagle Refining, Inc., Evanston
TRI reporting facility.
EPA FRS registry ID 110000600378 (U.S. EPA ECHO) Agency record
Severity 5.8
Reladyne West, Evanston
TRI reporting facility.
EPA FRS registry ID 110070068337 (U.S. EPA ECHO) Agency record
Severity 5.5
Sgl Carbon Llc, Evanston
TRI reporting facility.
EPA FRS registry ID 110046371706 (U.S. EPA ECHO) Agency record
Severity 5.4
Evanston Landfill #2, Evanston
Major air pollution source.
EPA FRS registry ID 110070645710 (U.S. EPA ECHO) Agency record
Severity 5
Hoo Doo Ranch Project, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110055207985 (U.S. EPA ECHO) Agency record
Severity 4.5
Ellingford Brothers Inc.-Urie Batch Plant, Urie
NPDES wastewater discharge permit.
EPA FRS registry ID 110055183625 (U.S. EPA ECHO) Agency record
Severity 4.3
Blacks Fork Timber Products, Mountain View
NPDES wastewater discharge permit.
EPA FRS registry ID 110055184045 (U.S. EPA ECHO) Agency record
Severity 4.3
South & Jones Timber Company, Evanston
NPDES wastewater discharge permit.
EPA FRS registry ID 110055207627 (U.S. EPA ECHO) Agency record
Severity 4.3
Chevron U.S.A. Production- Carter Creek Gas Plant, Evanston
Major air pollution source.
EPA FRS registry ID 110000728570 (U.S. EPA ECHO) Agency record
Severity 3.8
Mountain View Wastewater Lagoon, Mountain View
NPDES wastewater discharge permit.
EPA FRS registry ID 110055169473 (U.S. EPA ECHO) Agency record
Severity 3.8
East Painter Facility, Uinta
Major air pollution source.
EPA FRS registry ID 110001933800 (U.S. EPA ECHO) Agency record
Severity 3.5
Questar Pipeline_ Eakin Station, Unk
Major air pollution source.
EPA FRS registry ID 110010412384 (U.S. EPA ECHO) Agency record
Severity 3.5
Painter Compressor Station, Evanston
Major air pollution source.
EPA FRS registry ID 110012532777 (U.S. EPA ECHO) Agency record
Severity 3.5
Lyman Wastewater Lagoon, Lyman
NPDES wastewater discharge permit.
EPA FRS registry ID 110055171488 (U.S. EPA ECHO) Agency record
Severity 3.5
Chevron U.S.A. Production- Carter Creek Gas Plant, Evanston
NPDES wastewater discharge permit.
EPA FRS registry ID 110000728570 (U.S. EPA ECHO) Agency record
Severity 3.3
Silver Eagle Refining-Evanston, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110062655988 (U.S. EPA ECHO) Agency record
Severity 3.3
City Of Evanston Roundhouse And Railyard Complex, Evanston
Brownfield property.
EPA FRS registry ID 110038702188 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Union Center, Evanston
Brownfield property.
EPA FRS registry ID 110039550303 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Bear Project Parkway, Evanston
Brownfield property.
EPA FRS registry ID 110060618087 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Wyoming State Hospital, Evanston
Brownfield property.
EPA FRS registry ID 110071973323 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 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 Uinta 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 Uinta 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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