OK / county FIPS 40137 / county research

Stephens County, Oklahoma: environmental and disease records

Cancer mortality in Stephens County is 184.9 deaths per 100,000 people per year against a U.S. rate of 143.2, a statistically significant excess. The strongest disease signals are Bladder deaths at 1.8 times the U.S. rate and Kidney & renal pelvis deaths at 1.8 times the U.S. rate. Federal databases place 480 regulated facilities, sites and hazards inside the county, led by Air permit holder (minor source) (375), Rail grade crossing (33), Public airport (12). 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: 34.4962, -97.8508.

How this county ranks in Oklahoma

View on the heat map Scan 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 Stephens County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Bladder	Deaths	7.5	4.1	1.83xSignificant	4.8 to 11.3	2020-2024
Kidney & renal pelvis	Deaths	6.1	3.4	1.79xSignificant	3.7 to 9.8	2020-2024
Esophagus	New cases	7.4	4.6	1.61x	4.6 to 11.5	2019-2023
Lung & bronchus	Deaths	48.1	30.2	1.59xSignificant	40.7 to 56.5	2020-2024
Kidney & renal pelvis	New cases	27.2	17.9	1.52xSignificant	21.3 to 34.3	2019-2023
Non-Hodgkin lymphoma	Deaths	6.6	4.8	1.38x	3.9 to 10.6	2020-2024
Melanoma of the skin	New cases	31.7	23.8	1.33xSignificant	25.1 to 39.5	2019-2023
Liver & bile duct	Deaths	8.6	6.6	1.3x	5.7 to 12.7	2020-2024
All cancer	Deaths	184.9	143.2	1.29xSignificant	169.9 to 200.9	2020-2024
Leukemia	Deaths	7.3	5.7	1.28x	4.6 to 11.2	2020-2024
Lung & bronchus	New cases	64.9	51.8	1.25xSignificant	56.3 to 74.6	2019-2023
Liver & bile duct	New cases	10.2	8.7	1.17x	7 to 14.7	2019-2023
Bladder	New cases	21.8	18.7	1.17x	16.9 to 27.8	2019-2023
Leukemia	New cases	16.7	14.5	1.15x	12.1 to 22.7	2019-2023
Brain & nervous system	New cases	6.8	6.2	1.1x	3.9 to 11.1	2019-2023
Non-Hodgkin lymphoma	New cases	20.1	18.5	1.09x	15.2 to 26.1	2019-2023
All cancer	New cases	484	453.4	1.07xSignificant	458.5 to 510.8	2019-2023
Thyroid	New cases	13.5	13	1.04x	8.8 to 19.8	2019-2023
Pancreas	New cases	13.2	13.9	0.95x	9.5 to 18.1	2019-2023
Stomach	New cases	6.2	6.6	0.94x	3.6 to 10.1	2019-2023
Pancreas	Deaths	10	11.3	0.88x	7 to 14.2	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 Stephens County
Measure	County	U.S. median	Difference	Unit
Premature death	10,562	9,842.6	+7%	years of life lost before age 75 per 100,000
Life expectancy	73.9	75.3	-2%	years
Child mortality	66.9	59.8	+12%	deaths under age 18 per 100,000
Infant mortality	9.3	6.2	+49%	deaths under age 1 per 1,000 live births
Injury deaths	115.1	96.9	+19%	deaths per 100,000
Drug overdose deaths	19.2	28.6	-33%	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.

Formaldehyde20.16 per million
Carbon Tetrachloride2.85 per million
Acetaldehyde1.51 per million
Benzene0.92 per million

EPA Air Quality Index

No EPA air quality monitor reports daily AQI for this county.

Regulated facilities, sites and hazards by type

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

Air permit holder (minor source)375
Rail grade crossing33
Public airport12
Toxic chemical release facility (TRI)9
Gas station (mapped facility)8
TRI reporting facility8
Brownfield property7
NPDES wastewater discharge permit7
Small hazardous waste generator6
Major air pollution source4
Large hazardous waste generator3
Auto repair or body shop (mapped facility)2
Commercial airport1
Dry cleaner (mapped facility)1
Large greenhouse gas emitter1
Hazardous waste transporter1
Heliport1
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.

Dcp Midstream Lp/Sholem Gas Plant, Duncan
Toxic chemical release facility (TRI). Chemicals: Formaldehyde, n-Hexane, Cyclohexane, Methanol and 4 more. Reports carcinogens. 44,438 lbs released over 5 years.
TRI facility ID 7353WDCPMD1MIWT (U.S. EPA Toxics Release Inventory)
Severity 8.1
Velma Gas Plant, Velma
Toxic chemical release facility (TRI). Chemicals: n-Hexane, Toluene, Xylene (mixed isomers), Benzene and 3 more. Reports carcinogens. 11,910 lbs released over 5 years.
TRI facility ID 7349WTLSPP1MIWE (U.S. EPA Toxics Release Inventory)
Severity 7.6
Halliburton Manufacturing & Leasing Co Llc, Duncan
Toxic chemical release facility (TRI). Chemicals: Manganese, Ethylene glycol, Chromium, Nickel and 2 more. Reports carcinogens. 1,412 lbs released over 5 years.
TRI facility ID 73536HLLBREASTS (U.S. EPA Toxics Release Inventory)
Severity 6.9
Cesi Chemical, Marlow
TRI reporting facility. Penalties $28,175.
EPA FRS registry ID 110015582877 (U.S. EPA ECHO) Agency record
Severity 6.7
Atlas Pipeline Midc/Velma Gas Plt, Velma
TRI reporting facility.
EPA FRS registry ID 110007386042 (U.S. EPA ECHO) Agency record
Severity 6.1
Dcp Midstream Lp/Sholem Gas Plt, Ratliff City
TRI reporting facility.
EPA FRS registry ID 110007386079 (U.S. EPA ECHO) Agency record
Severity 6.1
Flotek Chemistry Llc, Marlow
Toxic chemical release facility (TRI). Chemicals: Methanol, Certain glycol ethers, Ethylene glycol. 3,196 lbs released over 5 years.
TRI facility ID 73055CHMCL1004S (U.S. EPA Toxics Release Inventory)
Severity 5.7
Halliburton Energy Services, Inc., Duncan
TRI reporting facility.
EPA FRS registry ID 110042090199 (U.S. EPA ECHO) Agency record
Severity 5.3
Duncan Public Utilities Auth, Duncan
NPDES wastewater discharge permit. Penalties $20,000.
EPA FRS registry ID 110002047160 (U.S. EPA ECHO) Agency record
Severity 5
Sensia Llc, Duncan
Toxic chemical release facility (TRI). Chemicals: Nickel 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). Reports carcinogens.
TRI facility ID 7573WCMRNN73NIX (U.S. EPA Toxics Release Inventory)
Severity 4.5
Cesi Chemical, Marlow
Large hazardous waste generator. Penalties $28,175.
EPA FRS registry ID 110015582877 (U.S. EPA ECHO) Agency record
Severity 4.3
Cameron International Corp, Duncan
TRI reporting facility.
EPA FRS registry ID 110039204731 (U.S. EPA ECHO) Agency record
Severity 4
Halliburton Duncan Field Camp, Duncan
TRI reporting facility.
EPA FRS registry ID 110071284346 (U.S. EPA ECHO) Agency record
Severity 4
Duncan #2 Batch Plant, Duncan
TRI reporting facility.
EPA FRS registry ID 110071433605 (U.S. EPA ECHO) Agency record
Severity 4
Solitaire Homes, Inc., Duncan
TRI reporting facility.
EPA FRS registry ID 110071956190 (U.S. EPA ECHO) Agency record
Severity 4
Atlas Pipeline Midc/Velma Gas Plt, Velma
Major air pollution source.
EPA FRS registry ID 110007386042 (U.S. EPA ECHO) Agency record
Severity 3.8
Dcp Midstream Lp/Sholem Gas Plt, Ratliff City
Major air pollution source.
EPA FRS registry ID 110007386079 (U.S. EPA ECHO) Agency record
Severity 3.8
Targa Pipeline Midcontinent Llc / Ketchum Ranch Compressor Station, Velma
Major air pollution source.
EPA FRS registry ID 110061077409 (U.S. EPA ECHO) Agency record
Severity 3.8
Sunoco Pipeline Lp/Velma Crude Oil Pipe, Velma
Major air pollution source.
EPA FRS registry ID 110007388497 (U.S. EPA ECHO) Agency record
Severity 3.5
Wilco Mach And Fabrication Inc / Nov Wilco North, Marlow
Large hazardous waste generator.
EPA FRS registry ID 110012276330 (U.S. EPA ECHO) Agency record
Severity 3.5
Atlas Pipeline Midc/Velma Gas Plt, Velma
NPDES wastewater discharge permit.
EPA FRS registry ID 110007386042 (U.S. EPA ECHO) Agency record
Severity 3.3
Dcp Operating Co Lp / Skipper Compressor Station, Foster
Air permit holder (minor source). Penalties $6,300.
EPA FRS registry ID 110055585246 (U.S. EPA ECHO) Agency record
Severity 3.3
Halliburton Duncan Field Camp, Duncan
Toxic chemical release facility (TRI). Chemicals: Lead And Lead Compounds, Mercury And Mercury Compounds.
TRI facility ID 7353WHLLBR215BI (U.S. EPA Toxics Release Inventory)
Severity 3
Marlow Armory, Marlow
Brownfield property.
EPA FRS registry ID 110043692126 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Duncan Armory, Duncan
Brownfield property.
EPA FRS registry ID 110067267371 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 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 Stephens County

Oklahoma 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 Stephens County, and their findings.
Oklahoma vital statistics office
Death certificate counts by cause of death and residence tract or ZIP code, and the years behind the mortality measures above.
Oklahoma health department, environmental epidemiology
Health consultations or assessments by ATSDR or the state health department covering the county, and any exposure investigations.
Oklahoma 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.
Oklahoma 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 Stephens County View on the heat map All Oklahoma counties