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Weston County, Wyoming: environmental and disease records

Cancer mortality in Weston County is 176.4 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 82 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (35), Rail grade crossing (22), Air permit holder (minor source) (5). 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: 43.8365, -104.5684.

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 Weston County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Lung & bronchus	Deaths	47.5	30.2	1.57x	29.5 to 73.9	2020-2024
Lung & bronchus	New cases	65	51.8	1.25x	44.5 to 93.5	2019-2023
All cancer	Deaths	176.4	143.2	1.23x	141.4 to 218.8	2020-2024
All cancer	New cases	446.2	453.4	0.98x	387.3 to 512.7	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 Weston County
Measure	County	U.S. median	Difference	Unit
Premature death	6,754.8	9,842.6	-31%	years of life lost before age 75 per 100,000
Life expectancy	78	75.3	+4%	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	75.9	96.9	-22%	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.

Formaldehyde10.57 per million
Carbon Tetrachloride2.6 per million
Acetaldehyde0.74 per million
Benzene0.6 per million

EPA Air Quality Index 2024

Monitored on 365 days: 320 good, 5 unhealthy for sensitive groups or worse. Median AQI 39, peak 136.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit35
Rail grade crossing22
Air permit holder (minor source)5
Public airport3
Hazardous waste transporter3
EPA air quality monitor2
Brownfield property2
Gas station (mapped facility)2
Large greenhouse gas emitter2
Major air pollution source1
Commercial airport1
Large hazardous waste generator1
Small hazardous waste generator1
TRI reporting facility1
Toxic chemical release facility (TRI)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.

Wyoming Refining Co, Newcastle
Toxic chemical release facility (TRI). Chemicals: Toluene, n-Hexane, Propylene, Benzene and 4 more. Reports carcinogens. Reports PFAS. 76,585 lbs released over 5 years.
TRI facility ID 82701WYMNG740WE (U.S. EPA Toxics Release Inventory)
Severity 9.7
Wyoming Refining Company, Newcastle
TRI reporting facility.
EPA FRS registry ID 110000468226 (U.S. EPA ECHO) Agency record
Severity 6.7
True Ranch Quarry (Lqd Spo735), (Unknown City)
NPDES wastewater discharge permit.
EPA FRS registry ID 110055164183 (U.S. EPA ECHO) Agency record
Severity 4.5
Newcastle Yard, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110055182877 (U.S. EPA ECHO) Agency record
Severity 4.5
Dixon Brothers Newcastle Facility, Newcastle
NPDES wastewater discharge permit.
EPA FRS registry ID 110063614076 (U.S. EPA ECHO) Agency record
Severity 4.5
Newcastle Concrete Batch Plant, Newcastle
NPDES wastewater discharge permit.
EPA FRS registry ID 110070940388 (U.S. EPA ECHO) Agency record
Severity 4.5
Wyoming Refining Company, Newcastle
Major air pollution source.
EPA FRS registry ID 110000468226 (U.S. EPA ECHO) Agency record
Severity 4.3
Wyoming Refining Company, Newcastle
Large hazardous waste generator.
EPA FRS registry ID 110000468226 (U.S. EPA ECHO) Agency record
Severity 3.8
Wyoming Refining Company, Newcastle
NPDES wastewater discharge permit.
EPA FRS registry ID 110000468226 (U.S. EPA ECHO) Agency record
Severity 3.8
Wyoming Refining Company, Newcastle
Large greenhouse gas emitter.
EPA FRS registry ID 110000468226 (U.S. EPA ECHO) Agency record
Severity 3.3
28-1 Federal Tank Battery, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110055172218 (U.S. EPA ECHO) Agency record
Severity 3.3
Newcastle Refinery (Igp), Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110055184072 (U.S. EPA ECHO) Agency record
Severity 3.3
Rock Well Turner Creek Discharges, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110055195097 (U.S. EPA ECHO) Agency record
Severity 3.3
Upton Regional Industrial Property, Upton
Brownfield property.
EPA FRS registry ID 110038755987 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
20 W Hill Street, Newcastle
Brownfield property.
EPA FRS registry ID 110071975838 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
City Of Newcastle Wastewater, Newcastle
NPDES wastewater discharge permit.
EPA FRS registry ID 110070987318 (U.S. EPA ECHO) Agency record
Severity 3
Duff Avenue Sewer Reconstruction, Newcastle
NPDES wastewater discharge permit.
EPA FRS registry ID 110071822099 (U.S. EPA ECHO) Agency record
Severity 3
Poison Creek Discharges, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110055171273 (U.S. EPA ECHO) Agency record
Severity 2.8
Wgr Operating Newcastle Gas Plant, Newcastle
Large greenhouse gas emitter.
EPA FRS registry ID 110000558986 (U.S. EPA ECHO) Agency record
Severity 2.5
Lak Ranch, (Unknown City)
NPDES wastewater discharge permit.
EPA FRS registry ID 110055183331 (U.S. EPA ECHO) Agency record
Severity 2.5
Upton Wastewater Lagoon, Upton
NPDES wastewater discharge permit.
EPA FRS registry ID 110055197406 (U.S. EPA ECHO) Agency record
Severity 2.5
Government Olds #1, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110055200116 (U.S. EPA ECHO) Agency record
Severity 2.5
Rock Well Beaver Creek Discharges, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110055195088 (U.S. EPA ECHO) Agency record
Severity 2
Bataa Lone Tree Discharges, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110055202196 (U.S. EPA ECHO) Agency record
Severity 2
Dewey Dome Lease, Unknown
NPDES wastewater discharge permit.
EPA FRS registry ID 110070251349 (U.S. EPA ECHO) Agency record
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 Weston 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 Weston 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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