Envyrofax
Scan an Address

OH / county FIPS 39041 / county research

Delaware County, Ohio: environmental and disease records

Cancer mortality in Delaware County is 129.1 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 322 regulated facilities, sites and hazards inside the county, led by Rail grade crossing (94), Gas station (mapped facility) (51), NPDES wastewater discharge permit (39). 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: 40.2943, -82.9994.

How this county ranks in Ohio

View on the heat mapScan an address in this county

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 Delaware County compared with the United States
CancerMeasureCounty rateU.S. rateTimes U.S.95% intervalYears
Melanoma of the skinNew cases33.723.81.42xSignificant30.4 to 37.22019-2023
Childhood cancer (under 15)New cases22.716.41.38xSignificant16.8 to 30.12019-2023
Brain & nervous systemNew cases7.96.21.27xSignificant6.4 to 9.72019-2023
Kidney & renal pelvisDeaths4.33.41.26x3.2 to 5.72020-2024
Non-Hodgkin lymphomaNew cases21.718.51.17xSignificant19.1 to 24.62019-2023
ThyroidNew cases14.6131.12x12.4 to 172019-2023
Non-Hodgkin lymphomaDeaths5.34.81.1x4.1 to 6.82020-2024
BladderNew cases19.518.71.04x17.1 to 22.22019-2023
PancreasDeaths11.711.31.04x9.9 to 13.82020-2024
Brain & nervous systemDeaths4.54.41.02x3.4 to 5.82020-2024
All cancerNew cases456.1453.41.01x444.1 to 468.32019-2023
Melanoma of the skinDeaths221x1.3 to 32020-2024
Kidney & renal pelvisNew cases17.717.90.99x15.4 to 20.22019-2023
LeukemiaDeaths5.65.70.98x4.3 to 7.12020-2024
BladderDeaths44.10.98x2.9 to 5.32020-2024
PancreasNew cases13.213.90.95x11.2 to 15.52019-2023
EsophagusNew cases4.34.60.93x3.2 to 5.62019-2023
Liver & bile ductNew cases88.70.92x6.4 to 9.82019-2023
All cancerDeaths129.1143.20.9x122.7 to 135.72020-2024
Liver & bile ductDeaths5.66.60.85x4.3 to 7.12020-2024
Lung & bronchusDeaths25.230.20.83x22.5 to 28.22020-2024
Lung & bronchusNew cases43.251.80.83x39.6 to 47.12019-2023
EsophagusDeaths33.70.81x2.1 to 4.12020-2024
StomachDeaths2.12.70.78x1.4 to 3.12020-2024
LeukemiaNew cases10.914.50.75x9 to 13.12019-2023
StomachNew cases4.86.60.73x3.7 to 6.32019-2023

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 Delaware County
MeasureCountyU.S. medianDifferenceUnit
Premature death4,328.79,842.6-56%years of life lost before age 75 per 100,000
Life expectancy81.175.3+8%years
Child mortality27.359.8-54%deaths under age 18 per 100,000
Infant mortality3.56.2-43%deaths under age 1 per 1,000 live births
Injury deaths51.696.9-47%deaths per 100,000
Drug overdose deaths15.928.6-44%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.

  • Formaldehyde17.21 per million
  • Carbon Tetrachloride2.93 per million
  • Acetaldehyde1.79 per million
  • Naphthalene1.59 per million

EPA Air Quality Index 2025

Monitored on 242 days: 204 good, 3 unhealthy for sensitive groups or worse. Median AQI 40, peak 119.

Regulated facilities, sites and hazards by type

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

  • Rail grade crossing94
  • Gas station (mapped facility)51
  • NPDES wastewater discharge permit39
  • Small hazardous waste generator29
  • Auto repair or body shop (mapped facility)24
  • Air permit holder (minor source)20
  • Toxic chemical release facility (TRI)15
  • TRI reporting facility13
  • Dry cleaner (mapped facility)7
  • Public airport6
  • Large hazardous waste generator6
  • Major air pollution source3
  • Brownfield property3
  • Wastewater plant (mapped facility)3
  • Heliport2
  • Landfill (mapped facility)2
  • EPA air quality monitor1
  • Commercial airport1
  • Battery storage 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. Liberty Casting Co (0121010003), Delaware

    TRI reporting facility. Penalties $275,000.

    EPA FRS registry ID 110041419961 (U.S. EPA ECHO) Agency record

    Severity 9.5

  2. Liberty Casting Co Llc., Delaware

    Toxic chemical release facility (TRI). Chemicals: 1,2,4-Trimethylbenzene, Phenol, Copper, Manganese and 2 more. Reports carcinogens. 32,783 lbs released over 5 years.

    TRI facility ID 43015GNRLC550LI (U.S. EPA Toxics Release Inventory)

    Severity 8

  3. Ppg Industries Ohio Inc - Delaware, Delaware

    Toxic chemical release facility (TRI). Chemicals: Xylene (mixed isomers), Methyl methacrylate, Methyl isobutyl ketone, Styrene and 4 more. Reports carcinogens. 26,226 lbs released over 5 years.

    TRI facility ID 43015PPGND760PI (U.S. EPA Toxics Release Inventory)

    Severity 7.9

  4. Liberty Casting Co (0121010003), Delaware

    Major air pollution source. Penalties $275,000.

    EPA FRS registry ID 110041419961 (U.S. EPA ECHO) Agency record

    Severity 7.3

  5. Ppg Industries - Delaware, Delaware

    TRI reporting facility.

    EPA FRS registry ID 110000381382 (U.S. EPA ECHO) Agency record

    Severity 6.8

  6. Charter Next Generation - Delaware, Delaware

    Toxic chemical release facility (TRI). Chemicals: Ozone. 60,970 lbs released over 5 years.

    TRI facility ID 4301WCHRTR1188S (U.S. EPA Toxics Release Inventory)

    Severity 6.7

  7. Abrasive Technology, Lewis Center

    Toxic chemical release facility (TRI). Chemicals: Toluene. 52,952 lbs released over 5 years.

    TRI facility ID 4303WBRSVT84GRE (U.S. EPA Toxics Release Inventory)

    Severity 6.6

  8. Henkel Corporation, Delaware

    TRI reporting facility. Penalties $3,300.

    EPA FRS registry ID 110000381373 (U.S. EPA ECHO) Agency record

    Severity 6.5

  9. Astemo Americas Inc., Sunbury

    Toxic chemical release facility (TRI). Chemicals: Manganese And Manganese Compounds, Manganese compounds, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region), Nickel And Nickel Compounds and 2 more. Reports carcinogens. 244 lbs released over 5 years.

    TRI facility ID 43074SNBRY707WE (U.S. EPA Toxics Release Inventory)

    Severity 6.3

  10. American Howa Of Ohio, Delaware

    Toxic chemical release facility (TRI). Chemicals: Diisocyanates. 14,561 lbs released over 5 years.

    TRI facility ID 4301WMRCNH222ST (U.S. EPA Toxics Release Inventory)

    Severity 6.2

  11. Charter Next Generation - Delaware, Delaware

    TRI reporting facility.

    EPA FRS registry ID 110071956472 (U.S. EPA ECHO) Agency record

    Severity 6.1

  12. American Howa Of Ohio, Delaware

    TRI reporting facility.

    EPA FRS registry ID 110070244600 (U.S. EPA ECHO) Agency record

    Severity 5.9

  13. Abrasive Technology Inc, Lewis Center

    TRI reporting facility.

    EPA FRS registry ID 110002316912 (U.S. EPA ECHO) Agency record

    Severity 5.9

  14. Hitachi Astemo Americas, Inc., Sunbury

    TRI reporting facility.

    EPA FRS registry ID 110000498729 (U.S. EPA ECHO) Agency record

    Severity 5.3

  15. Henkel Us Operations Corp, Delaware

    Toxic chemical release facility (TRI). Chemicals: Diethanolamine, Nonylphenol Ethoxylates, Certain glycol ethers, N-Methyl-2-pyrrolidone. 891 lbs released over 5 years.

    TRI facility ID 43015PNNWL421LO (U.S. EPA Toxics Release Inventory)

    Severity 5.3

  16. Olentangy Environmental Control Center, Powell

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110039777943 (U.S. EPA ECHO) Agency record

    Severity 5.3

  17. Liberty Casting Co (0121010003), Delaware

    Small hazardous waste generator. Penalties $275,000.

    EPA FRS registry ID 110041419961 (U.S. EPA ECHO) Agency record

    Severity 5.3

  18. Crystal Lake Mhp, Delaware

    NPDES wastewater discharge permit. Penalties $22,100.

    EPA FRS registry ID 110006195660 (U.S. EPA ECHO) Agency record

    Severity 4.8

  19. Worthington Cylinders Corp, Westerville

    Toxic chemical release facility (TRI). Chemicals: Lead, Nickel, Manganese. Reports carcinogens. 1 lbs released over 5 years.

    TRI facility ID 43082WRTHN333MA (U.S. EPA Toxics Release Inventory)

    Severity 4.7

  20. Chroma Color Corp, Delaware

    Toxic chemical release facility (TRI). Chemicals: Zinc compounds, Chromium and Chromium Compounds(except for chromite ore mined in the Transvaal Region), Chromium compounds (except for chromite ore mined in the Transvaal Region), Antimony And Antimony Compounds and 1 more. 165 lbs released over 5 years.

    TRI facility ID 4301WCRLNC1CLME (U.S. EPA Toxics Release Inventory)

    Severity 4.7

  21. Oberfields - Sunbury Oh Masonry Plant, Sunbury

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

    TRI facility ID 4307WBRFLD4174K (U.S. EPA Toxics Release Inventory)

    Severity 4.6

  22. Ppg Industries - Delaware, Delaware

    Major air pollution source.

    EPA FRS registry ID 110000381382 (U.S. EPA ECHO) Agency record

    Severity 4.5

  23. Alum Creek Water Reclamation Facility, Delaware

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110008587234 (U.S. EPA ECHO) Agency record

    Severity 4.5

  24. Hylen Souders Elem Sch, Galena

    NPDES wastewater discharge permit.

    EPA FRS registry ID 110022185017 (U.S. EPA ECHO) Agency record

    Severity 4.5

  25. Oberfields - Delaware Oh Masonry Plant, Delaware

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

    TRI facility ID 4301WBRFLD528LN (U.S. EPA Toxics Release Inventory)

    Severity 4.5

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 Delaware County

  • Ohio 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 Delaware County, and their findings.

  • Ohio vital statistics office

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

  • Ohio health department, environmental epidemiology

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

  • Ohio 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.

  • Ohio 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.

Scan an address in Delaware CountyView on the heat mapAll Ohio counties