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Warren County, Ohio: environmental and disease records

Cancer mortality in Warren County is 134.7 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 442 regulated facilities, sites and hazards inside the county, led by Air permit holder (minor source) (85), Gas station (mapped facility) (80), Rail grade crossing (79). 3 correctional facilities operate in the county, at least one with health-based drinking water violations on record. 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: 39.4244, -84.1653.

How this county ranks in Ohio

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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 Warren County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Melanoma of the skin	New cases	46.6	23.8	1.96xSignificant	43.1 to 50.4	2019-2023
Childhood cancer (under 15)	New cases	24.6	16.4	1.5xSignificant	18.6 to 31.9	2019-2023
Melanoma of the skin	Deaths	2.6	2	1.3x	1.8 to 3.6	2020-2024
Brain & nervous system	New cases	8	6.2	1.29xSignificant	6.5 to 9.7	2019-2023
Leukemia	New cases	17	14.5	1.17xSignificant	14.9 to 19.4	2019-2023
All cancer	New cases	484.5	453.4	1.07xSignificant	473 to 496.1	2019-2023
Kidney & renal pelvis	Deaths	3.6	3.4	1.06x	2.7 to 4.8	2020-2024
Lung & bronchus	New cases	54.2	51.8	1.05x	50.5 to 58.2	2019-2023
Non-Hodgkin lymphoma	New cases	19.3	18.5	1.04x	17.1 to 21.9	2019-2023
Lung & bronchus	Deaths	31.4	30.2	1.04x	28.6 to 34.4	2020-2024
Kidney & renal pelvis	New cases	18.5	17.9	1.03x	16.4 to 20.9	2019-2023
Bladder	Deaths	4.2	4.1	1.02x	3.2 to 5.5	2020-2024
Bladder	New cases	19.1	18.7	1.02x	16.8 to 21.5	2019-2023
Non-Hodgkin lymphoma	Deaths	4.9	4.8	1.02x	3.8 to 6.3	2020-2024
Leukemia	Deaths	5.8	5.7	1.02x	4.5 to 7.2	2020-2024
Thyroid	New cases	12.8	13	0.98x	10.9 to 15	2019-2023
Brain & nervous system	Deaths	4.3	4.4	0.98x	3.3 to 5.6	2020-2024
Pancreas	Deaths	10.8	11.3	0.96x	9.2 to 12.6	2020-2024
All cancer	Deaths	134.7	143.2	0.94x	128.7 to 140.9	2020-2024
Pancreas	New cases	12.8	13.9	0.92x	11 to 14.8	2019-2023
Esophagus	New cases	4.1	4.6	0.89x	3.1 to 5.3	2019-2023
Liver & bile duct	New cases	7.6	8.7	0.87x	6.3 to 9.2	2019-2023
Liver & bile duct	Deaths	5.3	6.6	0.8x	4.2 to 6.6	2020-2024
Esophagus	Deaths	2.8	3.7	0.76x	2 to 3.8	2020-2024
Stomach	New cases	4.8	6.6	0.73x	3.7 to 6.1	2019-2023
Stomach	Deaths	1.3	2.7	0.48x	0.8 to 2	2020-2024

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 Warren County
Measure	County	U.S. median	Difference	Unit
Premature death	6,327.4	9,842.6	-36%	years of life lost before age 75 per 100,000
Life expectancy	78.2	75.3	+4%	years
Child mortality	33.4	59.8	-44%	deaths under age 18 per 100,000
Infant mortality	4.6	6.2	-25%	deaths under age 1 per 1,000 live births
Injury deaths	63.4	96.9	-35%	deaths per 100,000
Drug overdose deaths	24.5	28.6	-14%	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.

Formaldehyde19.23 per million
Carbon Tetrachloride2.93 per million
Acetaldehyde2.07 per million
Naphthalene1.82 per million

EPA Air Quality Index 2025

Monitored on 364 days: 247 good, 7 unhealthy for sensitive groups or worse. Median AQI 44, peak 126.

Regulated facilities, sites and hazards by type

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

Air permit holder (minor source)85
Gas station (mapped facility)80
Rail grade crossing79
NPDES wastewater discharge permit38
Small hazardous waste generator36
Toxic chemical release facility (TRI)27
TRI reporting facility22
Auto repair or body shop (mapped facility)21
Large hazardous waste generator10
Major air pollution source9
Brownfield property6
Heliport5
Dry cleaner (mapped facility)4
Hazardous waste transporter4
Public airport3
Correctional facility (prison or jail)3
Scrapyard (mapped facility)3
Landfill (mapped facility)2
EPA air quality monitor1
Airfield1
Large greenhouse gas emitter1
Superfund (NPL) site1
Wastewater plant (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.

Peters Cartridge Factory, Kings Mills
Superfund (NPL) site. Hazard Ranking System score 50. NPL Site.
EPA site ID OHD987051083 (U.S. EPA Superfund (SEMS/NPL)) Agency record
Severity 10
Midmark Corp, Lebanon
Toxic chemical release facility (TRI). Chemicals: Styrene. Reports carcinogens. 23,569 lbs released over 5 years.
TRI facility ID 45036SCHMD360HA (U.S. EPA Toxics Release Inventory)
Severity 7.9
Mitsubishi Electric Automotive America Inc., Mason
Toxic chemical release facility (TRI). Chemicals: Aluminum (fume or dust), Styrene, Copper, Zinc (fume or dust) and 3 more. Reports carcinogens. 18,034 lbs released over 5 years.
TRI facility ID 45040MTSBS4773B (U.S. EPA Toxics Release Inventory)
Severity 7.8
Marble Arch Products Inc, Franklin
Toxic chemical release facility (TRI). Chemicals: Styrene. Reports carcinogens. 9,226 lbs released over 5 years.
TRI facility ID 45005MRBLR263IN (U.S. EPA Toxics Release Inventory)
Severity 7.5
Mauser - Mason, Mason
Toxic chemical release facility (TRI). Chemicals: Certain glycol ethers, sec-Butyl alcohol. 392,916 lbs released over 5 years.
TRI facility ID 45040BRNFL1229C (U.S. EPA Toxics Release Inventory)
Severity 7.3
Rps Composites Ohio Inc, Franklin
Toxic chemical release facility (TRI). Chemicals: Styrene. Reports carcinogens. 3,211 lbs released over 5 years.
TRI facility ID 45005RPSCM25SHT (U.S. EPA Toxics Release Inventory)
Severity 7.2
Alfrebro Llc, Monroe
Toxic chemical release facility (TRI). Chemicals: Acetaldehyde. Reports carcinogens. 1,812 lbs released over 5 years.
TRI facility ID 4505WLFRBR155RE (U.S. EPA Toxics Release Inventory)
Severity 7
High Concrete Group Llc-Springboro, Springboro
Toxic chemical release facility (TRI). Chemicals: Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size). 73,119 lbs released over 5 years.
TRI facility ID 45066CNCRT95MOU (U.S. EPA Toxics Release Inventory)
Severity 6.7
Fecon Llc, Lebanon
Toxic chemical release facility (TRI). Chemicals: Manganese, Copper, Nickel, Chromium. Reports carcinogens. 517 lbs released over 5 years.
TRI facility ID 4503WFCNLL346GR (U.S. EPA Toxics Release Inventory)
Severity 6.6
Berenfield Containers Inc, Mason
TRI reporting facility.
EPA FRS registry ID 110000392432 (U.S. EPA ECHO) Agency record
Severity 6.5
The Hartz Mountain Corp, Pleasant Plain
Toxic chemical release facility (TRI). Chemicals: Tetrachlorvinphos, Phenothrin. Reports carcinogens. 180 lbs released over 5 years.
TRI facility ID 45162THHRT5374L (U.S. EPA Toxics Release Inventory)
Severity 6.2
Mason Wwtp No 2, Mason
NPDES wastewater discharge permit.
EPA FRS registry ID 110064255808 (U.S. EPA ECHO) Agency record
Severity 6
Pharmacia Hepar Llc, Franklin
Toxic chemical release facility (TRI). Chemicals: Methanol. 4,714 lbs released over 5 years.
TRI facility ID 45005HPRND160IN (U.S. EPA Toxics Release Inventory)
Severity 5.8
Advics Manufacturing Ohio Inc, Lebanon
Toxic chemical release facility (TRI). Chemicals: Nitric acid, Zinc compounds, Nitrate compounds (water dissociable; reportable only when in aqueous solution), Certain glycol ethers. 3,970 lbs released over 5 years.
TRI facility ID 45036LCSSM1650K (U.S. EPA Toxics Release Inventory)
Severity 5.8
Flint Group Packaging Inks N.A. Corp, Lebanon
Toxic chemical release facility (TRI). Chemicals: Toluene, Certain glycol ethers, Copper And Copper Compounds. 3,970 lbs released over 5 years.
TRI facility ID 45036FLNTN2675H (U.S. EPA Toxics Release Inventory)
Severity 5.8
L3harris Cincinnati Electronics Corp, Mason
Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 40 lbs released over 5 years.
TRI facility ID 45040CNCNN75INN (U.S. EPA Toxics Release Inventory)
Severity 5.7
Harris Products Group, Mason
Toxic chemical release facility (TRI). Chemicals: Copper, Silver. 3,590 lbs released over 5 years.
TRI facility ID 45040JWHRR4501X (U.S. EPA Toxics Release Inventory)
Severity 5.7
Midmark Corporation (1483060076), Lebanon
TRI reporting facility.
EPA FRS registry ID 110001626688 (U.S. EPA ECHO) Agency record
Severity 5.6
Mitsubishi Electric Automotive America (1483090295), Mason
TRI reporting facility.
EPA FRS registry ID 110000392450 (U.S. EPA ECHO) Agency record
Severity 5.6
General Dynamics (Gd-Ots), Springboro
Toxic chemical release facility (TRI). Chemicals: Nitric acid, Nitrate compounds (water dissociable; reportable only when in aqueous solution). 1,917 lbs released over 5 years.
TRI facility ID 45066GYSTN200PI (U.S. EPA Toxics Release Inventory)
Severity 5.5
Flint Group Packaging Ink (1483060398), Lebanon
TRI reporting facility.
EPA FRS registry ID 110002112730 (U.S. EPA ECHO) Agency record
Severity 5.5
High Concrete Group Llc (1483140150), Springboro
TRI reporting facility.
EPA FRS registry ID 110000392646 (U.S. EPA ECHO) Agency record
Severity 5.4
Gayston Corp, Springboro
TRI reporting facility.
EPA FRS registry ID 110000392664 (U.S. EPA ECHO) Agency record
Severity 5.4
Ferco Tech, Franklin
Toxic chemical release facility (TRI). Chemicals: Nickel, Chromium. Reports carcinogens. 12 lbs released over 5 years.
TRI facility ID 4500WFRCTC291CN (U.S. EPA Toxics Release Inventory)
Severity 5.3
Pharmacia Hepar Inc, Franklin
TRI reporting facility.
EPA FRS registry ID 110000392094 (U.S. EPA ECHO) Agency record
Severity 5.3

Correctional facilities

Prisons, jails and corrections operations with an EPA facility record, and the drinking water and wastewater compliance attached to them.

Lebanon Correctional Institution, Lebanon
EPA FRS registry ID
110001121367
Water system
OH8301012
Health-based violations
3 all time, 0 in 5 years
All violations
26
Contaminants cited
Coliform (TCR)
Wastewater permit
None on record
EPA detailed facility report
Warren Correctional Institution, Lebanon
EPA FRS registry ID
110064191146
Wastewater permit
None on record
EPA detailed facility report
Lebanon Correctional Institution, Lebanon
EPA FRS registry ID
110064191155
Wastewater permit
None on record
EPA detailed facility report

Discovery / public records

Records to request for Warren 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 Warren 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.

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