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Box Elder County, Utah: environmental and disease records

Cancer mortality in Box Elder County is 132 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 691 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (393), Rail grade crossing (161), Gas station (mapped facility) (43). 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: 41.5006, -112.9738.

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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 Box Elder 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	31.6	23.8	1.33xSignificant	25.3 to 39	2019-2023
Leukemia	Deaths	7.2	5.7	1.26x	4.3 to 11.2	2020-2024
Pancreas	Deaths	14	11.3	1.24x	10 to 19	2020-2024
Kidney & renal pelvis	New cases	21.8	17.9	1.22x	16.7 to 28	2019-2023
Brain & nervous system	New cases	7.5	6.2	1.21x	4.6 to 11.4	2019-2023
Thyroid	New cases	14.5	13	1.12x	10.5 to 19.6	2019-2023
Pancreas	New cases	14.8	13.9	1.06x	10.7 to 20	2019-2023
Leukemia	New cases	15.3	14.5	1.06x	11 to 20.6	2019-2023
Non-Hodgkin lymphoma	New cases	19.4	18.5	1.05x	14.7 to 25.2	2019-2023
All cancer	Deaths	132	143.2	0.92x	118.9 to 146.1	2020-2024
All cancer	New cases	414	453.4	0.91x	390.8 to 438.2	2019-2023
Bladder	New cases	16.3	18.7	0.87x	11.9 to 21.7	2019-2023
Liver & bile duct	New cases	5.8	8.7	0.67x	3.4 to 9.3	2019-2023
Lung & bronchus	Deaths	17.7	30.2	0.59x	13.2 to 23.3	2020-2024
Lung & bronchus	New cases	21	51.8	0.41x	16 to 27.1	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 Box Elder County
Measure	County	U.S. median	Difference	Unit
Premature death	6,824.2	9,842.6	-31%	years of life lost before age 75 per 100,000
Life expectancy	77.5	75.3	+3%	years
Child mortality	29.4	59.8	-51%	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	80.6	96.9	-17%	deaths per 100,000
Drug overdose deaths	22.4	28.6	-22%	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.

Formaldehyde10.29 per million
Carbon Tetrachloride2.56 per million
Acetaldehyde0.74 per million
Benzene0.59 per million

EPA Air Quality Index 2025

Monitored on 365 days: 236 good, 1 unhealthy for sensitive groups or worse. Median AQI 45, peak 105.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit393
Rail grade crossing161
Gas station (mapped facility)43
TRI reporting facility15
Toxic chemical release facility (TRI)15
Auto repair or body shop (mapped facility)14
Large hazardous waste generator8
Brownfield property7
Public airport6
Small hazardous waste generator5
Hazardous waste transporter5
Major air pollution source4
Air permit holder (minor source)3
EPA air quality monitor2
Large greenhouse gas emitter2
Heliport2
Hydroelectric plant2
Commercial airport1
Landfill (mapped facility)1
Scrapyard (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.

Northrop Grumman Systems Corp - Promontory, Promontory
Toxic chemical release facility (TRI). Chemicals: Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Aluminum (fume or dust), Polycyclic aromatic compounds, Nitroglycerin and 2 more. Reports carcinogens. 1,172,898 lbs released over 5 years.
TRI facility ID 84302MRTNT9160N (U.S. EPA Toxics Release Inventory)
Severity 9.2
Nucor Steel - A Div Of Nucor Corp, Plymouth
Toxic chemical release facility (TRI). Chemicals: Lead And Lead Compounds, Barium And Barium Compounds, Lead compounds, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region) and 4 more. Reports carcinogens. 1,059,706 lbs released over 5 years.
TRI facility ID 84330NCRST7285W (U.S. EPA Toxics Release Inventory)
Severity 9.1
Storm Products Inc, Brigham City
Toxic chemical release facility (TRI). Chemicals: Xylene (mixed isomers), Styrene, N-Methyl-2-pyrrolidone, Diisocyanates. Reports carcinogens. 58,083 lbs released over 5 years.
TRI facility ID 84302STRMP165S8 (U.S. EPA Toxics Release Inventory)
Severity 8.2
Northrop Grumman Systems, Brigham City
TRI reporting facility.
EPA FRS registry ID 110032607329 (U.S. EPA ECHO) Agency record
Severity 7.7
Nucor Building Systems Llc-Utah, Brigham City
Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds, Manganese, Nickel, Lead. Reports carcinogens. 4,233 lbs released over 5 years.
TRI facility ID 84302NCRBL15NWA (U.S. EPA Toxics Release Inventory)
Severity 7.3
Autoliv Asp Inc Promontory, Corinne
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Copper And Copper Compounds. 182,842 lbs released over 5 years.
TRI facility ID 84302MRTNT9160A (U.S. EPA Toxics Release Inventory)
Severity 7
Nucor Corp Vulcraft Div, Brigham City
Toxic chemical release facility (TRI). Chemicals: Manganese compounds, Manganese And Manganese Compounds, Manganese, Nickel compounds and 3 more. Reports carcinogens. 1,452 lbs released over 5 years.
TRI facility ID 84302VLCRF1875W (U.S. EPA Toxics Release Inventory)
Severity 6.9
Nucor Steel - A Div Of Nucor Corp, Plymouth
TRI reporting facility.
EPA FRS registry ID 110020079537 (U.S. EPA ECHO) Agency record
Severity 6.5
Air Force: Utah Test & Training Range - Suite 200, Hill Afb
TRI reporting facility.
EPA FRS registry ID 110000916206 (U.S. EPA ECHO) Agency record
Severity 6.4
West Liberty Foods Tremonton, Tremonton
Toxic chemical release facility (TRI). Chemicals: Ammonia. 13,888 lbs released over 5 years.
TRI facility ID 84337WSTLB845N2 (U.S. EPA Toxics Release Inventory)
Severity 6.2
Tremonton Ready Mix, Tremonton
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Lead. Reports carcinogens. 153 lbs released over 5 years.
TRI facility ID 8433WTRMNT678WE (U.S. EPA Toxics Release Inventory)
Severity 6.2
The Procter & Gamble Paper Products Co, Bear River City
Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds, Lead, Mercury, Dioxin and dioxin-like compounds. Reports carcinogens. 125 lbs released over 5 years.
TRI facility ID 8430WPRCTR5NRTH (U.S. EPA Toxics Release Inventory)
Severity 6.1
Storm Prods Inc, Brigham City
TRI reporting facility.
EPA FRS registry ID 110013327435 (U.S. EPA ECHO) Agency record
Severity 5.9
West Liberty Foods, Tremonton, Tremonton
TRI reporting facility.
EPA FRS registry ID 110030747761 (U.S. EPA ECHO) Agency record
Severity 5.6
Tms International Llc, Plymouth
Toxic chemical release facility (TRI). Chemicals: Manganese And Manganese Compounds, Manganese compounds, Lead And Lead Compounds, Lead compounds. 1,979 lbs released over 5 years.
TRI facility ID 84330MSSTLPOBOX (U.S. EPA Toxics Release Inventory)
Severity 5.5
Tms International, Llc, Plymouth
TRI reporting facility.
EPA FRS registry ID 110024422711 (U.S. EPA ECHO) Agency record
Severity 5.4
Nutrisol, Llc, Corinne
TRI reporting facility.
EPA FRS registry ID 110071956540 (U.S. EPA ECHO) Agency record
Severity 5.2
Nucor Building Systems Ut Llc, Brigham City
TRI reporting facility.
EPA FRS registry ID 110039075336 (U.S. EPA ECHO) Agency record
Severity 5.2
Nucor Corp Vulcraft Div, Brigham City
TRI reporting facility.
EPA FRS registry ID 110000771291 (U.S. EPA ECHO) Agency record
Severity 5.1
Nutrisol Llc, Corinne
Toxic chemical release facility (TRI). Chemicals: Zinc compounds. 500 lbs released over 5 years.
TRI facility ID 8430WNTRSL275NM (U.S. EPA Toxics Release Inventory)
Severity 5.1
Autoliv Asp Inc Promontory, Corinne
TRI reporting facility.
EPA FRS registry ID 110015675599 (U.S. EPA ECHO) Agency record
Severity 4.9
Corinne - City Of, Corinne
NPDES wastewater discharge permit. Penalties $11,593.
EPA FRS registry ID 110010690528 (U.S. EPA ECHO) Agency record
Severity 4.8
Northrop Grumman Systems, Brigham City
Major air pollution source.
EPA FRS registry ID 110032607329 (U.S. EPA ECHO) Agency record
Severity 4.8
Geneva Rock Products Perry, Brigham City
Toxic chemical release facility (TRI). Chemicals: Lead, Nitrate compounds (water dissociable; reportable only when in aqueous solution). Reports carcinogens.
TRI facility ID 8430WGNVRC6W3SX (U.S. EPA Toxics Release Inventory)
Severity 4.5
Brigham City Corporation Waste Water, Brigham City
NPDES wastewater discharge permit. Penalties $6,189.
EPA FRS registry ID 110002162873 (U.S. EPA ECHO) Agency record
Severity 4.5

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 Box Elder County

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