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Hamilton County, Indiana: environmental and disease records

Cancer mortality in Hamilton County is 122.1 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 1,710 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (808), Industrial wastewater discharge (587), Gas station (mapped facility) (74). EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 30 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: 40.0733, -86.0523.

How this county ranks in Indiana

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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 Hamilton County compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
Brain & nervous systemNew cases7.86.21.26xSignificant6.6 to 9.32019-2023
Melanoma of the skinDeaths2.521.25x1.8 to 3.32020-2024
Brain & nervous systemDeaths5.14.41.16x4.2 to 6.32020-2024
Melanoma of the skinNew cases27.223.81.14xSignificant24.9 to 29.72019-2023
LeukemiaDeaths6.25.71.09x5 to 7.42020-2024
PancreasNew cases14.913.91.07x13.2 to 16.82019-2023
PancreasDeaths1211.31.06x10.5 to 13.72020-2024
ThyroidNew cases13.2131.02x11.6 to 152019-2023
BladderNew cases18.718.71x16.7 to 20.92019-2023
Non-Hodgkin lymphomaDeaths4.84.81x3.9 to 62020-2024
Childhood cancer (under 15)New cases16.116.40.98x12.3 to 20.82019-2023
BladderDeaths44.10.98x3.1 to 5.12020-2024
Non-Hodgkin lymphomaNew cases17.618.50.95x15.7 to 19.62019-2023
All cancerNew cases430.5453.40.95x421.1 to 440.12019-2023
Kidney & renal pelvisDeaths3.23.40.94x2.5 to 4.22020-2024
Kidney & renal pelvisNew cases16.517.90.92x14.7 to 18.52019-2023
LeukemiaNew cases13.314.50.92x11.7 to 15.22019-2023
All cancerDeaths122.1143.20.85x117.1 to 127.32020-2024
StomachDeaths2.32.70.85x1.7 to 3.12020-2024
Liver & bile ductNew cases7.18.70.82x5.9 to 8.42019-2023
EsophagusNew cases3.74.60.8x2.9 to 4.72019-2023
Lung & bronchusNew cases41.351.80.8x38.4 to 44.42019-2023
StomachNew cases4.86.60.73x3.8 to 5.92019-2023
Lung & bronchusDeaths21.330.20.71x19.2 to 23.52020-2024
EsophagusDeaths2.53.70.68x1.9 to 3.32020-2024
Liver & bile ductDeaths4.36.60.65x3.4 to 5.32020-2024

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 Hamilton County
MeasureCountyU.S. medianDifferenceUnit
Premature death4,761.29,842.6-52%years of life lost before age 75 per 100,000
Life expectancy80.775.3+7%years
Child mortality38.959.8-35%deaths under age 18 per 100,000
Infant mortality4.96.2-21%deaths under age 1 per 1,000 live births
Injury deaths44.796.9-54%deaths per 100,000
Drug overdose deaths14.328.6-50%deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 30 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

  • Formaldehyde17.98 per million
  • Carbon Tetrachloride2.94 per million
  • Naphthalene1.97 per million
  • Acetaldehyde1.82 per million

EPA Air Quality Index 2025

Monitored on 364 days: 233 good, 5 unhealthy for sensitive groups or worse. Median AQI 44, peak 118.

Regulated facilities, sites and hazards by type

1,710 active records inside the county from EPA ECHO, TRI, Superfund, Brownfields, NPDES, EIA, FAA, FRA and corrections data.

  • NPDES wastewater discharge permit808
  • Industrial wastewater discharge587
  • Gas station (mapped facility)74
  • Auto repair or body shop (mapped facility)43
  • Rail grade crossing37
  • Small hazardous waste generator35
  • Air permit holder (minor source)27
  • Dry cleaner (mapped facility)15
  • TRI reporting facility13
  • Toxic chemical release facility (TRI)13
  • Brownfield property12
  • Combined sewer overflow outfall12
  • Public airport10
  • Major air pollution source5
  • Hazardous waste transporter5
  • EPA air quality monitor3
  • Wastewater plant (mapped facility)3
  • Large hazardous waste generator2
  • Airfield1
  • Commercial airport1
  • Large greenhouse gas emitter1
  • Heliport1
  • Gas power plant1
  • 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. King Systems Corp, Noblesville

    Toxic chemical release facility (TRI). Chemicals: Dichloromethane, Zinc compounds, Nitrate compounds (water dissociable; reportable only when in aqueous solution). Reports carcinogens. 190,548 lbs released over 5 years.

    TRI facility ID 46060KNGSY1511H (U.S. EPA Toxics Release Inventory)

    Severity 8.6

  2. Industrial Dielectrics Inc., Noblesville

    Toxic chemical release facility (TRI). Chemicals: Styrene, Zinc compounds. Reports carcinogens. 63,611 lbs released over 5 years.

    TRI facility ID 46060NDSTR407S7 (U.S. EPA Toxics Release Inventory)

    Severity 8.2

  3. Countrymark Refining & Logistics Llc, Westfield

    Toxic chemical release facility (TRI). Chemicals: n-Hexane, Toluene, Xylene (mixed isomers), Cyclohexane and 4 more. Reports carcinogens. 10,416 lbs released over 5 years.

    TRI facility ID 46074CNTRY17710 (U.S. EPA Toxics Release Inventory)

    Severity 7.6

  4. Industrial Dielectrics Inc. Dba Idi Composites Internationa, Noblesville

    Toxic chemical release facility (TRI). Chemicals: Styrene, Zinc compounds. Reports carcinogens. 9,723 lbs released over 5 years.

    TRI facility ID 4606WNDSTR15389 (U.S. EPA Toxics Release Inventory)

    Severity 7.6

  5. Helmer Scientific Trane Technologies, Noblesville

    Toxic chemical release facility (TRI). Chemicals: Chromium, Manganese, Nickel, Zinc compounds and 2 more. Reports carcinogens. 781 lbs released over 5 years.

    TRI facility ID 4606WHLMRS144BE (U.S. EPA Toxics Release Inventory)

    Severity 6.7

  6. Industrial Dielectrics Incorporated Dba Idi Composites International, Noblesville

    TRI reporting facility.

    EPA FRS registry ID 110071468386 (U.S. EPA ECHO) Agency record

    Severity 6.6

  7. King Systems Corporation, Noblesville

    TRI reporting facility.

    EPA FRS registry ID 110024447133 (U.S. EPA ECHO) Agency record

    Severity 6.1

  8. Noblesville Wwtp, City Of, Noblesville

    Combined sewer overflow outfall. No Violation Identified.

    NPDES permit IN0020168: (U.S. EPA NPDES)

    Severity 6

  9. Carmel- Hazel Dell Pkwy., Carmel

    EPA air quality monitor.

    Record ID 180570008 (U.S. EPA AirData)

    Severity 5.9

  10. Industrial Dielectrics, Noblesville

    TRI reporting facility.

    EPA FRS registry ID 110000396330 (U.S. EPA ECHO) Agency record

    Severity 5.8

  11. Countrymark Refining And Logistics Llc, Westfield

    TRI reporting facility.

    EPA FRS registry ID 110000396385 (U.S. EPA ECHO) Agency record

    Severity 5.8

  12. Indiana Mills & Manufacturing Inc., Westfield

    TRI reporting facility.

    EPA FRS registry ID 110070265855 (U.S. EPA ECHO) Agency record

    Severity 5.6

  13. Hinds Don Ford Inc, Noblesville

    Small hazardous waste generator. Penalties $11,200.

    EPA FRS registry ID 110003077072 (U.S. EPA ECHO) Agency record

    Severity 5.5

  14. Indiana Mills & Manufacturing Inc., Westfield

    Toxic chemical release facility (TRI). Chemicals: Manganese. 1,396 lbs released over 5 years.

    TRI facility ID 4607WNDNML18881 (U.S. EPA Toxics Release Inventory)

    Severity 5.4

  15. Duke Energy Indiana - Noblesville Generating Station, Noblesville

    Major air pollution source.

    EPA FRS registry ID 110000396349 (U.S. EPA ECHO) Agency record

    Severity 5.3

  16. Emc Precision Ii, Sheridan

    Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 8 lbs released over 5 years.

    TRI facility ID 46069BDDLP701SM (U.S. EPA Toxics Release Inventory)

    Severity 5.2

  17. 11775 Brooks School Rd., Fishers (corporate name for Fishers Station)

    EPA air quality monitor.

    Record ID 180570007 (U.S. EPA AirData)

    Severity 5.2

  18. Smc Corporation Of America, Noblesville

    TRI reporting facility.

    EPA FRS registry ID 110041244819 (U.S. EPA ECHO) Agency record

    Severity 5

  19. Id Castings Llc, Noblesville

    Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 2 lbs released over 5 years.

    TRI facility ID 46060NBLSV1600S (U.S. EPA Toxics Release Inventory)

    Severity 4.8

  20. Duke Energy Indiana - Noblesville Generating Station, Noblesville

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110000396349 (U.S. EPA ECHO) Agency record

    Severity 4.8

  21. Helmer Scientific Inc, Noblesville

    TRI reporting facility.

    EPA FRS registry ID 110059697289 (U.S. EPA ECHO) Agency record

    Severity 4.6

  22. Citizens Of Westfield Llc Wwtp, Westfield

    NPDES wastewater discharge permit. Penalties $36,000.

    EPA FRS registry ID 110064600846 (U.S. EPA ECHO) Agency record

    Severity 4.5

  23. Smc Corp Of America, Noblesville

    Toxic chemical release facility (TRI). Chemicals: Lead, Diisocyanates. Reports carcinogens.

    TRI facility ID 4606WSMCCR11SMC (U.S. EPA Toxics Release Inventory)

    Severity 4.5

  24. Duke Energy Indiana - Noblesville Generating Station, Noblesville

    Large greenhouse gas emitter.

    EPA FRS registry ID 110000396349 (U.S. EPA ECHO) Agency record

    Severity 4.3

  25. Fishers Cheeney Creek Wwtp, Fishers

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110011248293 (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 Hamilton County

  • Indiana 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 Hamilton County, and their findings.

  • Indiana vital statistics office

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

  • Indiana health department, environmental epidemiology

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

  • Indiana 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.

  • Indiana 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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