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San Mateo County, California: environmental and disease records

Cancer mortality in San Mateo County is 109.1 deaths per 100,000 people per year against a U.S. rate of 143.2. The strongest disease signals are Thyroid deaths at 1.6 times the U.S. rate and Stomach deaths at 1.3 times the U.S. rate. Federal databases place 2,854 regulated facilities, sites and hazards inside the county, led by Small hazardous waste generator (1,204), NPDES wastewater discharge permit (631), Large hazardous waste generator (277). 3 correctional facilities operate in the county. 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: 37.4082, -122.3111.

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 Mateo County compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
ThyroidDeaths0.80.51.6xSignificant0.6 to 1.12020-2024
StomachDeaths3.62.71.33xSignificant3.1 to 4.22020-2024
Melanoma of the skinNew cases29.623.81.24xSignificant28 to 31.22019-2023
StomachNew cases7.66.61.15xSignificant6.8 to 8.42019-2023
Non-Hodgkin lymphomaNew cases21.318.51.15xSignificant19.9 to 22.72019-2023
ThyroidNew cases14.2131.09x13 to 15.42019-2023
Liver & bile ductDeaths6.86.61.03x6.1 to 7.62020-2024
Liver & bile ductNew cases8.98.71.02x8.1 to 9.82019-2023
Childhood cancer (under 15)New cases1616.40.98x13 to 19.52019-2023
Brain & nervous systemDeaths4.24.40.95x3.6 to 4.82020-2024
All cancerNew cases417.2453.40.92x411.3 to 423.12019-2023
Non-Hodgkin lymphomaDeaths4.44.80.92x3.9 to 5.12020-2024
PancreasNew cases12.713.90.91x11.7 to 13.72019-2023
BladderNew cases16.918.70.9x15.7 to 18.12019-2023
PancreasDeaths9.811.30.87x8.9 to 10.72020-2024
Brain & nervous systemNew cases5.36.20.85x4.6 to 62019-2023
Melanoma of the skinDeaths1.720.85x1.3 to 2.12020-2024
LeukemiaNew cases1214.50.83x11 to 13.12019-2023
All cancerDeaths109.1143.20.76x106.2 to 112.12020-2024
Kidney & renal pelvisNew cases13.217.90.74x12.2 to 14.32019-2023
BladderDeaths34.10.73x2.5 to 3.52020-2024
Kidney & renal pelvisDeaths2.33.40.68x1.9 to 2.82020-2024
LeukemiaDeaths3.85.70.67x3.2 to 4.42020-2024
Lung & bronchusNew cases33.851.80.65x32.2 to 35.52019-2023
EsophagusNew cases2.84.60.61x2.4 to 3.42019-2023
Lung & bronchusDeaths17.430.20.58x16.2 to 18.62020-2024
EsophagusDeaths2.13.70.57x1.7 to 2.62020-2024

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 Mateo County
MeasureCountyU.S. medianDifferenceUnit
Premature death4,006.49,842.6-59%years of life lost before age 75 per 100,000
Life expectancy84.175.3+12%years
Child mortality26.159.8-56%deaths under age 18 per 100,000
Infant mortality2.96.2-53%deaths under age 1 per 1,000 live births
Injury deaths43.996.9-55%deaths per 100,000
Drug overdose deaths16.828.6-41%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.

  • Formaldehyde14.13 per million
  • Carbon Tetrachloride2.97 per million
  • Acetaldehyde1.47 per million
  • Benzene1.45 per million

EPA Air Quality Index 2024

Monitored on 319 days: 281 good, 0 unhealthy for sensitive groups or worse. Median AQI 27, peak 73.

Regulated facilities, sites and hazards by type

2,854 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

  • Small hazardous waste generator1,204
  • NPDES wastewater discharge permit631
  • Large hazardous waste generator277
  • Auto repair or body shop (mapped facility)196
  • Gas station (mapped facility)161
  • Hazardous waste transporter83
  • Rail grade crossing80
  • Industrial wastewater discharge57
  • Dry cleaner (mapped facility)44
  • Air permit holder (minor source)35
  • Brownfield property20
  • Wastewater plant (mapped facility)19
  • Toxic chemical release facility (TRI)13
  • Major air pollution source6
  • TRI reporting facility6
  • Landfill (mapped facility)4
  • Commercial airport3
  • Correctional facility (prison or jail)3
  • Large greenhouse gas emitter3
  • Biomass power plant2
  • Gas power plant2
  • Scrapyard (mapped facility)2
  • EPA air quality monitor1
  • Heliport1
  • Solar power plant1

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. San Francisco International Airport, San Francisco Intnl Airport

    Major air pollution source. Penalties $1,750.

    EPA FRS registry ID 110002334064 (U.S. EPA ECHO) Agency record

    Severity 7.5

  2. Browning - Ferris Industries Of Ca Inc - Landfill, Half Moon Bay

    Major air pollution source. Penalties $70,000.

    EPA FRS registry ID 110005972965 (U.S. EPA ECHO) Agency record

    Severity 7.5

  3. United Airlines, Sf Maintenance Center, San Francisco Intnl Airport

    Major air pollution source. Penalties $35,000.

    EPA FRS registry ID 110008261585 (U.S. EPA ECHO) Agency record

    Severity 7.3

  4. San Francisco International Airport, San Francisco Intnl Airport

    Large hazardous waste generator. Penalties $1,750.

    EPA FRS registry ID 110002334064 (U.S. EPA ECHO) Agency record

    Severity 7

  5. San Francisco International Airport, San Francisco Intnl Airport

    NPDES wastewater discharge permit. Penalties $1,750.

    EPA FRS registry ID 110002334064 (U.S. EPA ECHO) Agency record

    Severity 7

  6. United Airlines, Sf Maintenance Center, San Francisco Intnl Airport

    Large hazardous waste generator. Penalties $35,000.

    EPA FRS registry ID 110008261585 (U.S. EPA ECHO) Agency record

    Severity 6.8

  7. Cypress Amloc Land Co , Inc, Colma

    Major air pollution source.

    EPA FRS registry ID 110005973189 (U.S. EPA ECHO) Agency record

    Severity 6.5

  8. Csbio, Menlo Park

    Toxic chemical release facility (TRI). Chemicals: Acetonitrile, Dichloromethane, N,N-Dimethylformamide. Reports carcinogens. 161 lbs released over 5 years.

    TRI facility ID 9402WCSBCX2KELL (U.S. EPA Toxics Release Inventory)

    Severity 6.2

  9. Genentech Inc Founders Research Center (Mid Campus), South San Francisco

    Large hazardous waste generator.

    EPA FRS registry ID 110032729652 (U.S. EPA ECHO) Agency record

    Severity 6

  10. Stanford Medicine Outpatient Center, Redwood City

    Large hazardous waste generator.

    EPA FRS registry ID 110037380731 (U.S. EPA ECHO) Agency record

    Severity 6

  11. Central Concrete Supply Co. Inc. - South San Francisco, South San Francisco

    Toxic chemical release facility (TRI). Chemicals: Lead, Mercury, Nitrate compounds (water dissociable; reportable only when in aqueous solution). Reports carcinogens. 40 lbs released over 5 years.

    TRI facility ID 9408WCNTRL135SA (U.S. EPA Toxics Release Inventory)

    Severity 5.7

  12. Granite Rock Co Redwood City, Redwood City

    Toxic chemical release facility (TRI). Chemicals: Barium, Zinc (fume or dust), Lead. Reports carcinogens. 19 lbs released over 5 years.

    TRI facility ID 9406WGRNTR355BL (U.S. EPA Toxics Release Inventory)

    Severity 5.5

  13. San Francisco International Airport, San Francisco Intnl Airport

    Small hazardous waste generator. Penalties $1,750.

    EPA FRS registry ID 110002334064 (U.S. EPA ECHO) Agency record

    Severity 5.5

  14. Central Concrete Supply Co Inc - Redwood City, Redwood City

    Toxic chemical release facility (TRI). Chemicals: Lead, Mercury, Nitrate compounds (water dissociable; reportable only when in aqueous solution). Reports carcinogens. 17 lbs released over 5 years.

    TRI facility ID 9406WCNTRL635SE (U.S. EPA Toxics Release Inventory)

    Severity 5.5

  15. H&H Peptides, Menlo Park

    TRI reporting facility.

    EPA FRS registry ID 110002790141 (U.S. EPA ECHO) Agency record

    Severity 5.4

  16. Us Doe Slac National Accelerator Laboratory, Menlo Park

    Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 10 lbs released over 5 years.

    TRI facility ID 94025SDSTN2575S (U.S. EPA Toxics Release Inventory)

    Severity 5.3

  17. Burlingame Wwtp, Burlingame

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110055988016 (U.S. EPA ECHO) Agency record

    Severity 5

  18. San Francisco Intl, San Francisco

    Commercial airport. O.

    Record ID SFO (FAA / U.S. DOT)

    Severity 5

  19. Harbor Ready Mix, San Carlos

    Toxic chemical release facility (TRI). Chemicals: Lead, Nitrate compounds (water dissociable; reportable only when in aqueous solution). Reports carcinogens. 3 lbs released over 5 years.

    TRI facility ID 9407WHRBRR941BR (U.S. EPA Toxics Release Inventory)

    Severity 5

  20. Slac National Accelerator Laboratory, Menlo Park

    TRI reporting facility.

    EPA FRS registry ID 110000908475 (U.S. EPA ECHO) Agency record

    Severity 4.8

  21. Chemelex Llc, Redwood City

    Toxic chemical release facility (TRI). Chemicals: Zinc compounds, Decabromodiphenyl oxide, Antimony compounds, Antimony And Antimony Compounds. 192 lbs released over 5 years.

    TRI facility ID 94063RYCHM2555B (U.S. EPA Toxics Release Inventory)

    Severity 4.8

  22. Calera Creek Wrp, Pacifica

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110009067400 (U.S. EPA ECHO) Agency record

    Severity 4.8

  23. Sims Metal America/Redwood City Division, Redwood City

    Large hazardous waste generator.

    EPA FRS registry ID 110018980334 (U.S. EPA ECHO) Agency record

    Severity 4.8

  24. San Mateo Wwtf, San Mateo

    NPDES wastewater discharge permit. Penalties $6,000.

    EPA FRS registry ID 110056000857 (U.S. EPA ECHO) Agency record

    Severity 4.8

  25. Seaport Environmental- Refining, Redwood City

    Large hazardous waste generator. Penalties $232,442.

    EPA FRS registry ID 110070419889 (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.

Discovery / public records

Records to request for San Mateo 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 Mateo 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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