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San Benito County, California: environmental and disease records

Cancer mortality in San Benito County is 134.6 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 327 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (126), Small hazardous waste generator (58), Wastewater plant (mapped facility) (29). 3 correctional facilities operate in the county. EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 40 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: 36.5951, -121.0309.

How this county ranks in California

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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 San Benito County compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
Liver & bile ductNew cases11.98.71.37x8.5 to 16.22019-2023
ThyroidNew cases17.2131.32x13 to 22.32019-2023
Brain & nervous systemDeaths5.64.41.27x3.3 to 8.82020-2024
PancreasDeaths13.511.31.19x9.9 to 182020-2024
Liver & bile ductDeaths7.86.61.18x5.2 to 11.42020-2024
LeukemiaDeaths6.45.71.12x4 to 9.82020-2024
Kidney & renal pelvisNew cases19.617.91.09x15.2 to 252019-2023
Melanoma of the skinNew cases25.523.81.07x20.4 to 31.52019-2023
StomachNew cases76.61.06x4.4 to 10.52019-2023
Non-Hodgkin lymphomaNew cases19.318.51.04x14.8 to 24.72019-2023
Brain & nervous systemNew cases6.36.21.02x3.9 to 9.72019-2023
LeukemiaNew cases14.514.51x10.8 to 19.32019-2023
PancreasNew cases13.313.90.96x9.7 to 17.72019-2023
All cancerDeaths134.6143.20.94x122.5 to 147.72020-2024
All cancerNew cases418.2453.40.92x396.6 to 440.72019-2023
BladderNew cases14.218.70.76x10.5 to 18.92019-2023
Lung & bronchusDeaths22.730.20.75x17.9 to 28.52020-2024
Lung & bronchusNew cases29.851.80.58x24.1 to 36.42019-2023

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 San Benito County
MeasureCountyU.S. medianDifferenceUnit
Premature death6,316.49,842.6-36%years of life lost before age 75 per 100,000
Life expectancy79.975.3+6%years
Child mortality41.159.8-31%deaths under age 18 per 100,000
Infant mortalityn/a6.2n/adeaths under age 1 per 1,000 live births
Injury deaths63.296.9-35%deaths per 100,000
Drug overdose deaths20.728.6-28%deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 40 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

  • Formaldehyde24.4 per million
  • Naphthalene3.22 per million
  • Acetaldehyde3.16 per million
  • Carbon Tetrachloride2.9 per million

EPA Air Quality Index 2025

Monitored on 365 days: 334 good, 0 unhealthy for sensitive groups or worse. Median AQI 39, peak 71.

Regulated facilities, sites and hazards by type

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

  • NPDES wastewater discharge permit126
  • Small hazardous waste generator58
  • Wastewater plant (mapped facility)29
  • Gas station (mapped facility)16
  • Industrial wastewater discharge15
  • Rail grade crossing15
  • Hazardous waste transporter14
  • Large hazardous waste generator13
  • Auto repair or body shop (mapped facility)8
  • TRI reporting facility5
  • Toxic chemical release facility (TRI)5
  • EPA air quality monitor3
  • Correctional facility (prison or jail)3
  • Solar power plant3
  • Major air pollution source2
  • Public airport2
  • Brownfield property2
  • Dry cleaner (mapped facility)2
  • Air permit holder (minor source)1
  • Commercial airport1
  • Large greenhouse gas emitter1
  • Heliport1
  • Landfill (mapped facility)1
  • Superfund (NPL) 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.

  1. New Idria Mercury Mine, Idria

    Superfund (NPL) site. Hazard Ranking System score 31.7. NPL Site.

    EPA site ID CA0001900463 (U.S. EPA Superfund (SEMS/NPL)) Agency record

    Severity 10

  2. Trical Inc, Hollister

    Toxic chemical release facility (TRI). Chemicals: Chloropicrin, 1,3-Dichloropropylene, Bromomethane. Reports carcinogens. 15,116 lbs released over 5 years.

    TRI facility ID 95024TRCLN8770H (U.S. EPA Toxics Release Inventory)

    Severity 7.7

  3. Fujifilm Electronic Materials Usa Inc., Hollister

    Toxic chemical release facility (TRI). Chemicals: N-Methyl-2-pyrrolidone, Ethylene glycol, Methanol. 70,622 lbs released over 5 years.

    TRI facility ID 95023PCFCP2340B (U.S. EPA Toxics Release Inventory)

    Severity 6.7

  4. Pride Conveyance Systems, Hollister

    Toxic chemical release facility (TRI). Chemicals: Chromium, Nickel, Manganese. Reports carcinogens. 397 lbs released over 5 years.

    TRI facility ID 9502WPRDCN1781S (U.S. EPA Toxics Release Inventory)

    Severity 6.5

  5. Kmg Electronic Chemicals Inc, Hollister

    TRI reporting facility.

    EPA FRS registry ID 110009553036 (U.S. EPA ECHO) Agency record

    Severity 6.1

  6. Trical Inc, Hollister

    TRI reporting facility.

    EPA FRS registry ID 110023165867 (U.S. EPA ECHO) Agency record

    Severity 5.6

  7. San Juan Bautista Wwtp, San Juan Bautista

    NPDES wastewater discharge permit. Penalties $243,000.

    EPA FRS registry ID 110009126999 (U.S. EPA ECHO) Agency record

    Severity 5.5

  8. Granite Rock Co - Aromas, Aromas

    NPDES wastewater discharge permit. Penalties $78,000.

    EPA FRS registry ID 110072218611 (U.S. EPA ECHO) Agency record

    Severity 4.8

  9. Pacific Scientific Energetics Materials Co California, Hollister

    TRI reporting facility.

    EPA FRS registry ID 110000484075 (U.S. EPA ECHO) Agency record

    Severity 4.3

  10. Royal Circuit Solutions Inc, Hollister

    TRI reporting facility.

    EPA FRS registry ID 110002814777 (U.S. EPA ECHO) Agency record

    Severity 4.3

  11. John Smith Road Class Iii Landfill, Hollister

    Major air pollution source.

    EPA FRS registry ID 110017972951 (U.S. EPA ECHO) Agency record

    Severity 4.3

  12. Pride Conveyance Systems, Hollister

    TRI reporting facility.

    EPA FRS registry ID 110014462330 (U.S. EPA ECHO) Agency record

    Severity 4

  13. Royal Circuit Solutions Inc., Hollister

    Toxic chemical release facility (TRI). Chemicals: Copper And Copper Compounds, Lead compounds, Lead And Lead Compounds. 10 lbs released over 5 years.

    TRI facility ID 9502WRYLCR21HAM (U.S. EPA Toxics Release Inventory)

    Severity 3.8

  14. John Smith Road Class Iii Landfill, Hollister

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110017972951 (U.S. EPA ECHO) Agency record

    Severity 3.8

  15. Pacific Scientific Energetics Materials Co California, Hollister

    Toxic chemical release facility (TRI). Chemicals: Lead compounds, Lead And Lead Compounds. 4 lbs released over 5 years.

    TRI facility ID 95023TLDYN3601U (U.S. EPA Toxics Release Inventory)

    Severity 3.5

  16. Graniterock: A R Wilson Quarry, Aromas

    Major air pollution source.

    EPA FRS registry ID 110006830732 (U.S. EPA ECHO) Agency record

    Severity 3.5

  17. Pacific Scientific Energetics Materials Co California, Hollister

    Large hazardous waste generator.

    EPA FRS registry ID 110000484075 (U.S. EPA ECHO) Agency record

    Severity 3.3

  18. Pacific Scientific Energetics Materials Co California, Hollister

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110000484075 (U.S. EPA ECHO) Agency record

    Severity 3.3

  19. Royal Circuit Solutions Inc, Hollister

    Large hazardous waste generator.

    EPA FRS registry ID 110002814777 (U.S. EPA ECHO) Agency record

    Severity 3.3

  20. John Smith Road Class Iii Landfill, Hollister

    Large greenhouse gas emitter.

    EPA FRS registry ID 110017972951 (U.S. EPA ECHO) Agency record

    Severity 3.3

  21. New Idria Mercury Mine, New Idria

    Brownfield property.

    EPA FRS registry ID 110060987482 (U.S. EPA Brownfields (ACRES)) Agency record

    Severity 3

  22. Southside Road Project Area - County Of San Benito, Hollister

    Brownfield property.

    EPA FRS registry ID 110071971913 (U.S. EPA Brownfields (ACRES)) Agency record

    Severity 3

  23. Alpha Teknova Inc, Hollister

    Large hazardous waste generator.

    EPA FRS registry ID 110006486105 (U.S. EPA ECHO) Agency record

    Severity 3

  24. Graniterock: A R Wilson Quarry, Aromas

    Large hazardous waste generator.

    EPA FRS registry ID 110006830732 (U.S. EPA ECHO) Agency record

    Severity 3

  25. Caltrans District 05, Hollister

    Large hazardous waste generator.

    EPA FRS registry ID 110008275428 (U.S. EPA ECHO) 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.

  • Mediko Correctional Healthcare Inc San Benito County Jail, Hollister

    EPA FRS registry ID
    x00806797b767dc28621aca91801a89d2
    Wastewater permit
    None on record

    EPA detailed facility report

  • 1f4304 Hollister Deficiency Corrections, Hollister

    EPA FRS registry ID
    xb7cc3a79fd531050fd08de42330ce26c
    Wastewater permit
    Yes

    EPA detailed facility report

  • 1c2604 La Gloria Rd Curve Correction, Paicines

    EPA FRS registry ID
    xc7f0b31e9eae0070cc36aa925f814f9e
    Wastewater permit
    Yes

    EPA detailed facility report

Discovery / public records

Records to request for San Benito County

  • California 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 San Benito County, and their findings.

  • California vital statistics office

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

  • California health department, environmental epidemiology

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

  • California 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.

  • California 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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