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Calaveras County, California: environmental and disease records

Cancer mortality in Calaveras County is 148.3 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 266 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (127), Small hazardous waste generator (38), Industrial wastewater discharge (24). 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: 38.1712, -120.6573.

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 Calaveras County compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
Brain & nervous systemNew cases8.26.21.32x5.3 to 12.42019-2023
Melanoma of the skinNew cases30.423.81.28xSignificant24.8 to 37.22019-2023
EsophagusDeaths4.53.71.22x2.8 to 7.32020-2024
LeukemiaDeaths6.85.71.19x4.3 to 10.52020-2024
PancreasDeaths1211.31.06x8.9 to 16.32020-2024
Lung & bronchusDeaths31.830.21.05x26.6 to 37.92020-2024
BladderNew cases19.518.71.04x15.3 to 24.82019-2023
Non-Hodgkin lymphomaDeaths54.81.04x3.1 to 82020-2024
All cancerDeaths148.3143.21.04x136.3 to 161.22020-2024
Kidney & renal pelvisNew cases18.417.91.03x13.9 to 24.12019-2023
LeukemiaNew cases14.714.51.01x10.5 to 20.12019-2023
BladderDeaths44.10.98x2.3 to 6.92020-2024
All cancerNew cases441.7453.40.97x418.8 to 465.62019-2023
PancreasNew cases13.113.90.94x9.8 to 17.52019-2023
EsophagusNew cases4.24.60.91x2.4 to 7.12019-2023
ThyroidNew cases11.7130.9x7.4 to 17.62019-2023
Brain & nervous systemDeaths3.94.40.89x2.3 to 6.72020-2024
Lung & bronchusNew cases43.951.80.85x37.8 to 512019-2023
Non-Hodgkin lymphomaNew cases13.418.50.72x9.9 to 182019-2023
Liver & bile ductNew cases6.18.70.7x4 to 9.42019-2023
StomachNew cases4.56.60.68x2.5 to 7.82019-2023
Liver & bile ductDeaths4.36.60.65x2.7 to 72020-2024

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 Calaveras County
MeasureCountyU.S. medianDifferenceUnit
Premature death7,926.39,842.6-19%years of life lost before age 75 per 100,000
Life expectancy78.875.3+5%years
Child mortalityn/a59.8n/adeaths under age 18 per 100,000
Infant mortalityn/a6.2n/adeaths under age 1 per 1,000 live births
Injury deaths99.796.9+3%deaths per 100,000
Drug overdose deaths20.128.6-30%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.

  • Formaldehyde28.85 per million
  • Acetaldehyde3.06 per million
  • Carbon Tetrachloride2.82 per million
  • Pahpom1.31 per million

EPA Air Quality Index 2025

Monitored on 359 days: 295 good, 0 unhealthy for sensitive groups or worse. Median AQI 40, peak 100.

Regulated facilities, sites and hazards by type

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

  • NPDES wastewater discharge permit127
  • Small hazardous waste generator38
  • Industrial wastewater discharge24
  • Wastewater plant (mapped facility)19
  • Gas station (mapped facility)18
  • Hazardous waste transporter15
  • Large hazardous waste generator11
  • Hydroelectric plant5
  • Air permit holder (minor source)2
  • Auto repair or body shop (mapped facility)2
  • Heliport2
  • EPA air quality monitor1
  • Public airport1
  • Commercial airport1

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. Copper Cove Wwrf, Copperopolis

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110027858432 (U.S. EPA ECHO) Agency record

    Severity 4.3

  2. Calaveras County Gov'T. Ctr., San Andreas

    Air permit holder (minor source).

    EPA FRS registry ID 110018913014 (U.S. EPA ECHO) Agency record

    Severity 4

  3. Rock Creek Landfill, Farmington

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110064319946 (U.S. EPA ECHO) Agency record

    Severity 4

  4. Calaveras County Iwm, Vallecito

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070088784 (U.S. EPA ECHO) Agency record

    Severity 4

  5. Calaveras Unified School District, San Andreas

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070092289 (U.S. EPA ECHO) Agency record

    Severity 4

  6. San Andreas-Gold Strike Road, San Andreas

    EPA air quality monitor.

    Record ID 060090001 (U.S. EPA AirData)

    Severity 3.5

  7. Cvs Pharmacy # 9539, Angels Camp

    Large hazardous waste generator.

    EPA FRS registry ID 110055822604 (U.S. EPA ECHO) Agency record

    Severity 3.5

  8. Royal Mountain King Mine, Copperopolis

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110013956816 (U.S. EPA ECHO) Agency record

    Severity 3.3

  9. City Of Angels Wwtp, Angels Camp

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110030437524 (U.S. EPA ECHO) Agency record

    Severity 3.3

  10. Calaveras Cement / Div Of Flintkote Co, San Andreas

    Large hazardous waste generator.

    EPA FRS registry ID 110002670592 (U.S. EPA ECHO) Agency record

    Severity 3

  11. Verhalen Automotive, Vallecito

    Large hazardous waste generator.

    EPA FRS registry ID 110005995441 (U.S. EPA ECHO) Agency record

    Severity 3

  12. Pacific Bell, Farmington

    Large hazardous waste generator.

    EPA FRS registry ID 110006487266 (U.S. EPA ECHO) Agency record

    Severity 3

  13. Penn Mine, Campo Seco

    Large hazardous waste generator.

    EPA FRS registry ID 110008287978 (U.S. EPA ECHO) Agency record

    Severity 3

  14. Pacific Bell, Arnold

    Large hazardous waste generator.

    EPA FRS registry ID 110008292114 (U.S. EPA ECHO) Agency record

    Severity 3

  15. Pacific Bell, Mokelumne Hill

    Large hazardous waste generator.

    EPA FRS registry ID 110008292524 (U.S. EPA ECHO) Agency record

    Severity 3

  16. Pacific Bell, Murphys

    Large hazardous waste generator.

    EPA FRS registry ID 110008292533 (U.S. EPA ECHO) Agency record

    Severity 3

  17. Ebmud - Pardee Center, Valley Springs

    Large hazardous waste generator.

    EPA FRS registry ID 110041974682 (U.S. EPA ECHO) Agency record

    Severity 3

  18. Cvs Pharmacy No 9390, Valley Springs

    Large hazardous waste generator.

    EPA FRS registry ID 110046524944 (U.S. EPA ECHO) Agency record

    Severity 3

  19. Bret Harte Union High School District, Angels Camp

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110066334247 (U.S. EPA ECHO) Agency record

    Severity 3

  20. Hogan Quarry, Valley Springs

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070088781 (U.S. EPA ECHO) Agency record

    Severity 3

  21. Mccarty Pit, Douglas Flat

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070088789 (U.S. EPA ECHO) Agency record

    Severity 3

  22. Pg&E - Corral Substation, Valley Springs

    Large hazardous waste generator.

    EPA FRS registry ID x690da5ed8157c38c3690f357639122b9 (U.S. EPA ECHO) Agency record

    Severity 3

  23. Khosla Residence, Sheep Ranch

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110070090583 (U.S. EPA ECHO) Agency record

    Severity 2.8

  24. Forest Meadows Wwrp, Murphys

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110037253290 (U.S. EPA ECHO) Agency record

    Severity 2.3

  25. Calaveras Co Water District, San Andreas

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110055984163 (U.S. EPA ECHO) Agency record

    Severity 2

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 Calaveras 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 Calaveras 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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