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Lyon County, Nevada: environmental and disease records

Cancer mortality in Lyon County is 150.9 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Melanoma of the skin deaths at 1.9 times the U.S. rate and Esophagus deaths at 1.6 times the U.S. rate. Federal databases place 380 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (146), Brownfield property (72), Rail grade crossing (35). 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: 39.0799, -119.0329.

How this county ranks in Nevada

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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 Lyon County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Melanoma of the skin	Deaths	3.8	2	1.9xSignificant	2.1 to 6.5	2020-2024
Esophagus	Deaths	6.1	3.7	1.65xSignificant	3.9 to 9.2	2020-2024
Melanoma of the skin	New cases	39.2	23.8	1.65xSignificant	33 to 46.2	2019-2023
Esophagus	New cases	7.3	4.6	1.59xSignificant	5 to 10.5	2019-2023
Bladder	Deaths	6.4	4.1	1.56x	4.1 to 9.7	2020-2024
Bladder	New cases	29	18.7	1.55xSignificant	24.2 to 34.6	2019-2023
Kidney & renal pelvis	Deaths	4.8	3.4	1.41x	2.8 to 7.7	2020-2024
Liver & bile duct	New cases	11.1	8.7	1.28x	8.3 to 14.8	2019-2023
Non-Hodgkin lymphoma	Deaths	6.1	4.8	1.27x	4 to 9.2	2020-2024
Liver & bile duct	Deaths	7.5	6.6	1.14x	5.3 to 10.6	2020-2024
Lung & bronchus	New cases	58.7	51.8	1.13x	51.7 to 66.5	2019-2023
Brain & nervous system	New cases	6.9	6.2	1.11x	4.3 to 10.5	2019-2023
Pancreas	New cases	15	13.9	1.08x	11.4 to 19.4	2019-2023
All cancer	Deaths	150.9	143.2	1.05x	139.2 to 163.4	2020-2024
Lung & bronchus	Deaths	31.2	30.2	1.03x	26.2 to 36.9	2020-2024
All cancer	New cases	465.4	453.4	1.03x	444.2 to 487.4	2019-2023
Thyroid	New cases	12.2	13	0.94x	8.5 to 17	2019-2023
Leukemia	New cases	13.3	14.5	0.92x	9.8 to 17.7	2019-2023
Kidney & renal pelvis	New cases	16.4	17.9	0.92x	12.4 to 21.3	2019-2023
Pancreas	Deaths	10.1	11.3	0.89x	7.4 to 13.6	2020-2024
Non-Hodgkin lymphoma	New cases	16.1	18.5	0.87x	12.2 to 21	2019-2023
Brain & nervous system	Deaths	3.8	4.4	0.86x	2.1 to 6.4	2020-2024
Leukemia	Deaths	4.5	5.7	0.79x	2.7 to 7.3	2020-2024
Stomach	New cases	4.7	6.6	0.71x	2.8 to 7.5	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 Lyon County
Measure	County	U.S. median	Difference	Unit
Premature death	10,098.4	9,842.6	+3%	years of life lost before age 75 per 100,000
Life expectancy	74.2	75.3	-1%	years
Child mortality	40.6	59.8	-32%	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	119.7	96.9	+23%	deaths per 100,000
Drug overdose deaths	25.4	28.6	-11%	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.

Formaldehyde13.39 per million
Carbon Tetrachloride2.55 per million
Acetaldehyde1.35 per million
Pahpom0.97 per million

EPA Air Quality Index 2025

Monitored on 359 days: 323 good, 0 unhealthy for sensitive groups or worse. Median AQI 41, peak 84.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit146
Brownfield property72
Rail grade crossing35
Gas station (mapped facility)27
Toxic chemical release facility (TRI)18
Small hazardous waste generator17
TRI reporting facility16
Public airport9
Air permit holder (minor source)6
Hazardous waste transporter6
Major air pollution source4
Large hazardous waste generator4
Auto repair or body shop (mapped facility)3
Scrapyard (mapped facility)3
Wastewater plant (mapped facility)3
Hydroelectric plant2
EPA air quality monitor1
Commercial airport1
Large greenhouse gas emitter1
Heliport1
Geothermal plant1
Gas power plant1
Solar power plant1
Superfund (NPL) site1
Proposed Superfund site1

Highest-severity records

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

Nevada Cement Co, Fernley
TRI reporting facility. Penalties $67,000.
EPA FRS registry ID 110000918179 (U.S. EPA ECHO) Agency record
Severity 10
Carson River Mercury Site, Churchill County, Lyon County
Superfund (NPL) site. Hazard Ranking System score 39.1. NPL Site.
EPA site ID NVD980813646 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Anaconda Copper Mine, Yerington
Proposed Superfund site. Hazard Ranking System score 50. Proposed NPL Site.
EPA site ID NVD083917252 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 8
Nevada Cement Co, Fernley
Toxic chemical release facility (TRI). Chemicals: Ammonia, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region), Barium And Barium Compounds, Vanadium compounds and 4 more. Reports carcinogens. 34,145 lbs released over 5 years.
TRI facility ID 89408NVDCMHWYI8 (U.S. EPA Toxics Release Inventory)
Severity 8
Peterson Products, Dayton
Toxic chemical release facility (TRI). Chemicals: Styrene. Reports carcinogens. 10,532 lbs released over 5 years.
TRI facility ID 89403SMTHR10AIR (U.S. EPA Toxics Release Inventory)
Severity 7.6
Carboline Global Inc., Dayton
Toxic chemical release facility (TRI). Chemicals: Toluene, Xylene (mixed isomers), Certain glycol ethers, Methyl isobutyl ketone and 4 more. Reports carcinogens. 10,349 lbs released over 5 years.
TRI facility ID 8940WCRBLN95AIR (U.S. EPA Toxics Release Inventory)
Severity 7.6
Nevada Cement Co, Fernley
Major air pollution source. Penalties $67,000.
EPA FRS registry ID 110000918179 (U.S. EPA ECHO) Agency record
Severity 7.5
Sherwin-Williams Co, Fernley
Toxic chemical release facility (TRI). Chemicals: Ammonia, Zinc compounds, Ethylene glycol, Certain glycol ethers and 4 more. Reports carcinogens. 3,688 lbs released over 5 years.
TRI facility ID 89408SHRWN1891D (U.S. EPA Toxics Release Inventory)
Severity 7.2
Nevada Cement Co, Fernley
NPDES wastewater discharge permit. Penalties $67,000.
EPA FRS registry ID 110000918179 (U.S. EPA ECHO) Agency record
Severity 7
21st Century Environmental Llc - Clean Earth Tsdf, Fernley
TRI reporting facility.
EPA FRS registry ID 110020509831 (U.S. EPA ECHO) Agency record
Severity 6.7
Valley Joist Llc, Fernley
Toxic chemical release facility (TRI). Chemicals: Manganese, Nickel, Lead, Chromium. Reports carcinogens. 355 lbs released over 5 years.
TRI facility ID 89408VLLYJ255LO (U.S. EPA Toxics Release Inventory)
Severity 6.5
21st Century Environmental Management Of Nevada Llc, Fernley
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Hydrogen fluoride, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region), Chromium compounds (except for chromite ore mined in the Transvaal Region) and 4 more. Reports carcinogens. 251 lbs released over 5 years.
TRI facility ID 89408CNTRY2095N (U.S. EPA Toxics Release Inventory)
Severity 6.3
Ozark Materials Llc An Ingevity Co, Dayton
Toxic chemical release facility (TRI). Chemicals: Methanol. 20,772 lbs released over 5 years.
TRI facility ID 89403MDLLC80AIF (U.S. EPA Toxics Release Inventory)
Severity 6.3
Qg Printing Ii Llc, Fernley
Toxic chemical release facility (TRI). Chemicals: Toluene, Copper compounds, Zinc compounds. 12,736 lbs released over 5 years.
TRI facility ID 89408QBCRP2000E (U.S. EPA Toxics Release Inventory)
Severity 6.2
Pnac Llc - Fernley, Fernley
Toxic chemical release facility (TRI). Chemicals: Naphthalene, Polycyclic aromatic compounds, Lead compounds, Benzo[g,h,i]perylene and 1 more. Reports carcinogens. 74 lbs released over 5 years.
TRI facility ID 89408PRMNT425SL (U.S. EPA Toxics Release Inventory)
Severity 5.9
Medallic Art Co. Ltd., Dayton
TRI reporting facility.
EPA FRS registry ID 110022516204 (U.S. EPA ECHO) Agency record
Severity 5.8
Polyglass Usa Inc, Fernley
Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds. Reports carcinogens. 24 lbs released over 5 years.
TRI facility ID 8940WPLYGL15LYN (U.S. EPA Toxics Release Inventory)
Severity 5.6
Carboline Global Inc, Dayton
TRI reporting facility.
EPA FRS registry ID 110045554146 (U.S. EPA ECHO) Agency record
Severity 5.5
Stella-Jones Corp, Silver Springs
Toxic chemical release facility (TRI). Chemicals: Pentachlorophenol, Polycyclic aromatic compounds, Dioxin and dioxin-like compounds. Reports carcinogens. 10 lbs released over 5 years.
TRI facility ID 89429NVDWD1680S (U.S. EPA Toxics Release Inventory)
Severity 5.3
Feldmeier Equipment Inc, Fernley
Toxic chemical release facility (TRI). Chemicals: Nickel, Chromium. Reports carcinogens. 8 lbs released over 5 years.
TRI facility ID 89408FLDMR375IN (U.S. EPA Toxics Release Inventory)
Severity 5.2
Henry Co, Fernley
Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds. Reports carcinogens. 7 lbs released over 5 years.
TRI facility ID 8940WHNRYC3INDU (U.S. EPA Toxics Release Inventory)
Severity 5.2
Western Emulsion Plant, Fernley
TRI reporting facility.
EPA FRS registry ID 110030999757 (U.S. EPA ECHO) Agency record
Severity 5.1
21st Century Environmental Llc - Clean Earth Tsdf, Fernley
Large hazardous waste generator.
EPA FRS registry ID 110020509831 (U.S. EPA ECHO) Agency record
Severity 5
21st Century Environmental Llc - Clean Earth Tsdf, Fernley
NPDES wastewater discharge permit.
EPA FRS registry ID 110020509831 (U.S. EPA ECHO) Agency record
Severity 5
Fernley Facility, Fernley
TRI reporting facility.
EPA FRS registry ID 110012263718 (U.S. EPA ECHO) Agency record
Severity 4.8

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 Lyon County

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