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Somerset County, Pennsylvania: environmental and disease records

Cancer mortality in Somerset County is 154 deaths per 100,000 people per year against a U.S. rate of 143.2, a statistically significant excess. Federal databases place 754 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (394), Rail grade crossing (115), Air permit holder (minor source) (71). 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: 40.0033, -79.0422.

How this county ranks in Pennsylvania

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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 Somerset County compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
ThyroidNew cases23.9131.84xSignificant19.1 to 29.52019-2023
EsophagusNew cases7.44.61.61xSignificant5.3 to 10.22019-2023
EsophagusDeaths5.33.71.43x3.5 to 7.92020-2024
Brain & nervous systemDeaths6.24.41.41x4.1 to 9.22020-2024
Brain & nervous systemNew cases8.76.21.4x6.1 to 12.12019-2023
Non-Hodgkin lymphomaDeaths6.34.81.31x4.5 to 8.92020-2024
Non-Hodgkin lymphomaNew cases21.918.51.18x18 to 26.52019-2023
Kidney & renal pelvisNew cases20.817.91.16x17 to 25.42019-2023
BladderNew cases21.418.71.14x17.8 to 25.72019-2023
LeukemiaNew cases16.514.51.14x13.3 to 20.52019-2023
All cancerDeaths154143.21.08xSignificant144.1 to 164.62020-2024
All cancerNew cases480453.41.06xSignificant461.2 to 499.52019-2023
PancreasDeaths11.911.31.05x9.4 to 152020-2024
BladderDeaths4.34.11.05x2.9 to 6.52020-2024
Liver & bile ductNew cases9.18.71.05x6.8 to 12.12019-2023
LeukemiaDeaths5.95.71.04x4.1 to 8.42020-2024
Lung & bronchusNew cases52.151.81.01x46.4 to 58.42019-2023
Kidney & renal pelvisDeaths3.43.41x2.1 to 5.42020-2024
PancreasNew cases13.613.90.98x10.8 to 172019-2023
Lung & bronchusDeaths29.230.20.97x25.1 to 342020-2024
Melanoma of the skinNew cases20.623.80.87x16.7 to 25.22019-2023
Liver & bile ductDeaths5.56.60.83x3.8 to 7.92020-2024
StomachNew cases4.66.60.7x2.9 to 7.12019-2023

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 Somerset County
MeasureCountyU.S. medianDifferenceUnit
Premature death9,156.79,842.6-7%years of life lost before age 75 per 100,000
Life expectancy75.775.3+1%years
Child mortality57.359.8-4%deaths under age 18 per 100,000
Infant mortality4.96.2-21%deaths under age 1 per 1,000 live births
Injury deaths97.696.9+1%deaths per 100,000
Drug overdose deaths35.628.6+24%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.

  • Formaldehyde14.42 per million
  • Carbon Tetrachloride2.82 per million
  • Acetaldehyde1.28 per million
  • Benzene1.28 per million

EPA Air Quality Index 2025

Monitored on 364 days: 344 good, 0 unhealthy for sensitive groups or worse. Median AQI 36, peak 93.

Regulated facilities, sites and hazards by type

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

  • NPDES wastewater discharge permit394
  • Rail grade crossing115
  • Air permit holder (minor source)71
  • Small hazardous waste generator45
  • Brownfield property29
  • Gas station (mapped facility)25
  • Auto repair or body shop (mapped facility)8
  • Wind power plant8
  • Major air pollution source6
  • Large greenhouse gas emitter6
  • Large hazardous waste generator6
  • Hazardous waste transporter6
  • Toxic chemical release facility (TRI)6
  • Public airport5
  • TRI reporting facility5
  • Wastewater plant (mapped facility)5
  • Heliport3
  • Landfill (mapped facility)3
  • Battery storage plant2
  • EPA air quality monitor1
  • Airfield1
  • Crematorium (mapped facility)1
  • Biomass power plant1
  • Hydroelectric plant1
  • 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.

  1. North American Hoganas, Hollsopple

    Toxic chemical release facility (TRI). Chemicals: Zinc compounds, Nickel And Nickel Compounds, Nickel compounds, Manganese compounds and 4 more. Reports carcinogens. 18,419 lbs released over 5 years.

    TRI facility ID 15935FRSTMRTE60 (U.S. EPA Toxics Release Inventory)

    Severity 7.8

  2. Aaadcg Inc. Rockwood Div, Rockwood

    Toxic chemical release facility (TRI). Chemicals: Copper, Nickel, Chromium, Manganese. Reports carcinogens. 5,374 lbs released over 5 years.

    TRI facility ID 15557RCKWD300MA (U.S. EPA Toxics Release Inventory)

    Severity 7.4

  3. Alexander Mill Services Inc/Stony Creek Plt, Hollsopple

    TRI reporting facility.

    EPA FRS registry ID 110000330650 (U.S. EPA ECHO) Agency record

    Severity 6.6

  4. Sci Laurel Highlands, Somerset

    Major air pollution source.

    EPA FRS registry ID 110010321678 (U.S. EPA ECHO) Agency record

    Severity 5.5

  5. Rockwood Mfg Co/Rockwood, Rockwood

    TRI reporting facility.

    EPA FRS registry ID 110001134987 (U.S. EPA ECHO) Agency record

    Severity 5.4

  6. Southern Alleghenies Landfill, Davidsville

    Large greenhouse gas emitter.

    EPA FRS registry ID 110001057533 (U.S. EPA ECHO) Agency record

    Severity 5.3

  7. Conemaugh Twp Muni Auth, Davidsville

    NPDES wastewater discharge permit. Penalties $6,000.

    EPA FRS registry ID 110001106259 (U.S. EPA ECHO) Agency record

    Severity 5.3

  8. Hoover Conveyor & Fabrication Corp, Meyersdale

    Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 5 lbs released over 5 years.

    TRI facility ID 15552HVRCN262IN (U.S. EPA Toxics Release Inventory)

    Severity 5.1

  9. Berlin Boro Stp, Berlin

    NPDES wastewater discharge permit. Penalties $10,000.

    EPA FRS registry ID 110010262759 (U.S. EPA ECHO) Agency record

    Severity 5

  10. Sci Laurel Highlands, Somerset

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110010321678 (U.S. EPA ECHO) Agency record

    Severity 5

  11. Shade Ldfl Inc- Shade Landfill, Cairnbrook

    Major air pollution source.

    EPA FRS registry ID 110006662575 (U.S. EPA ECHO) Agency record

    Severity 4.8

  12. Stonebridge Gardens Mhp-Hypochlorinator, Stoystown

    NPDES wastewater discharge permit. Penalties $15,200.

    EPA FRS registry ID 110010200497 (U.S. EPA ECHO) Agency record

    Severity 4.8

  13. Central City Quarry, New Enterprise

    NPDES wastewater discharge permit. Penalties $880.

    EPA FRS registry ID 110070050709 (U.S. EPA ECHO) Agency record

    Severity 4.8

  14. Saylor Hill No 2 Mine, Meyersdale

    NPDES wastewater discharge permit. Penalties $1,100.

    EPA FRS registry ID 110071298224 (U.S. EPA ECHO) Agency record

    Severity 4.8

  15. Alexander Mill Services Inc/Stony Creek Plt, Hollsopple

    Major air pollution source.

    EPA FRS registry ID 110000330650 (U.S. EPA ECHO) Agency record

    Severity 4.5

  16. Turkeyfoot Vly Area Sch Stp, Confluence

    NPDES wastewater discharge permit. Penalties $1,000.

    EPA FRS registry ID 110000946175 (U.S. EPA ECHO) Agency record

    Severity 4.5

  17. Meyersdale Stp, Meyersdale

    NPDES wastewater discharge permit. Penalties $10,000.

    EPA FRS registry ID 110002478104 (U.S. EPA ECHO) Agency record

    Severity 4.5

  18. Somerset Boro Plt & Sew, Somerset

    NPDES wastewater discharge permit. Penalties $20,000.

    EPA FRS registry ID 110006646585 (U.S. EPA ECHO) Agency record

    Severity 4.5

  19. Scottyland Camping Resort Stp, Rockwood

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110010189571 (U.S. EPA ECHO) Agency record

    Severity 4.5

  20. Confluence Boro Stp, Confluence

    NPDES wastewater discharge permit. Penalties $3,000.

    EPA FRS registry ID 110010975221 (U.S. EPA ECHO) Agency record

    Severity 4.5

  21. Sleasman Prop Sftf, Stoystown

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110041863882 (U.S. EPA ECHO) Agency record

    Severity 4.5

  22. Highland Tank & Mfg Co/Stoystown, Stoystown

    Small hazardous waste generator.

    EPA FRS registry ID 110000330053 (U.S. EPA ECHO) Agency record

    Severity 4.3

  23. Highland Tank & Mfg Co/Stoystown, Stoystown

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110000330053 (U.S. EPA ECHO) Agency record

    Severity 4.3

  24. Beckwith Machinery Co., Somerset

    Small hazardous waste generator.

    EPA FRS registry ID 110001037217 (U.S. EPA ECHO) Agency record

    Severity 4.3

  25. Southern Alleghenies Landfill, Davidsville

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110001057533 (U.S. EPA ECHO) Agency record

    Severity 4.3

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 Somerset County

  • Pennsylvania 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 Somerset County, and their findings.

  • Pennsylvania vital statistics office

    Death certificate counts by cause of death and residence tract or ZIP code, and the years behind the mortality measures above.

  • Pennsylvania health department, environmental epidemiology

    Health consultations or assessments by ATSDR or the state health department covering the county, and any exposure investigations.

  • Pennsylvania 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.

  • Pennsylvania 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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