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Harper County, Oklahoma: environmental and disease records

Cancer mortality in Harper County is 134.8 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 96 regulated facilities, sites and hazards inside the county, led by Air permit holder (minor source) (79), NPDES wastewater discharge permit (6), Brownfield property (4). EPA AirToxScreen estimates a lifetime cancer risk from outdoor air toxics of 20 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: 36.8083, -99.6494.

How this county ranks in Oklahoma

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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 Harper County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Lung & bronchus	New cases	86.4	51.8	1.67xSignificant	52.6 to 137.3	2019-2023
All cancer	New cases	476.4	453.4	1.05x	387.8 to 581.4	2019-2023
All cancer	Deaths	134.8	143.2	0.94x	92.6 to 193.1	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 Harper County
Measure	County	U.S. median	Difference	Unit
Premature death	4,840.4	9,842.6	-51%	years of life lost before age 75 per 100,000
Life expectancy	78.2	75.3	+4%	years
Child mortality	n/a	59.8	n/a	deaths under age 18 per 100,000
Infant mortality	n/a	6.2	n/a	deaths under age 1 per 1,000 live births
Injury deaths	68.9	96.9	-29%	deaths per 100,000
Drug overdose deaths	n/a	28.6	n/a	deaths per 100,000

Air toxics and air quality

EPA AirToxScreen 2020

Lifetime cancer risk from outdoor air toxics: 20 in a million. EPA treats 100 in a million as the upper end of acceptable risk and 1 in a million as the goal.

Formaldehyde14.09 per million
Carbon Tetrachloride2.78 per million
Acetaldehyde0.95 per million
Benzene0.52 per million

EPA Air Quality Index

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

Regulated facilities, sites and hazards by type

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

Air permit holder (minor source)79
NPDES wastewater discharge permit6
Brownfield property4
Wind power plant4
Public airport1
Commercial airport1
Oil-fired 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.

Buffalo Feeders Llc, Buffalo
NPDES wastewater discharge permit.
EPA FRS registry ID 110012664526 (U.S. EPA ECHO) Agency record
Severity 4.5
Laverne Diesel Generating Plant, Laverne
Oil-fired power plant.
Record ID 56348 (U.S. Energy Information Administration)
Severity 4
Project Real Estate Llc, Laverne
Brownfield property.
EPA FRS registry ID 110071969924 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Mv Purchasing Parcel #2, Laverne
Brownfield property.
EPA FRS registry ID 110071971254 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
E. M. Best Building, Buffalo
Brownfield property.
EPA FRS registry ID 110071978634 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Buffalo Museum, Buffalo
Brownfield property.
EPA FRS registry ID 110072114909 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Oneok Field Svc/Crowsfoot Cmpsr Sta, Fort Supply
Air permit holder (minor source). Penalties $901.
EPA FRS registry ID 110007167920 (U.S. EPA ECHO) Agency record
Severity 2
Buffalo Muni, Buffalo
Commercial airport. O.
Record ID BFK (FAA / U.S. DOT)
Severity 2
Laverne Product Terminal, Laverne
NPDES wastewater discharge permit.
EPA FRS registry ID 110007385524 (U.S. EPA ECHO) Agency record
Severity 1.5
Tri-State Feeders, Inc., Turpin
NPDES wastewater discharge permit.
EPA FRS registry ID 110011014525 (U.S. EPA ECHO) Agency record
Severity 1.5
Ok Calf Feeders, Buffalo
NPDES wastewater discharge permit.
EPA FRS registry ID 110054980320 (U.S. EPA ECHO) Agency record
Severity 1.5
Blue Line Milepost 105-106 Lowering, Laverne
NPDES wastewater discharge permit.
EPA FRS registry ID 110070105255 (U.S. EPA ECHO) Agency record
Severity 1.5
Line N Cimarron River Replacement Project, Buffalo
NPDES wastewater discharge permit.
EPA FRS registry ID 110070937401 (U.S. EPA ECHO) Agency record
Severity 1.5
Jma Energy Company / Grey Wolf 1 7, Laverne
Air permit holder (minor source).
EPA FRS registry ID 110071949286 (U.S. EPA ECHO) Agency record
Severity 1.3
Plains Pipeline Lp / Stockholm Crude Oil Station, Buffalo
Air permit holder (minor source).
EPA FRS registry ID 110007031924 (U.S. EPA ECHO) Agency record
Severity 1
Farmers Coop Assn Of Alva / Buffalo, Buffalo
Air permit holder (minor source).
EPA FRS registry ID 110007163657 (U.S. EPA ECHO) Agency record
Severity 1
Dcp Operating Co Lp / Laverne C Booster Station, Laverne
Air permit holder (minor source).
EPA FRS registry ID 110007164745 (U.S. EPA ECHO) Agency record
Severity 1
Dcp Midstream Lp/Laverne Sta, Laverne
Air permit holder (minor source).
EPA FRS registry ID 110007165101 (U.S. EPA ECHO) Agency record
Severity 1
Laverne Product Terminal, Laverne
Air permit holder (minor source).
EPA FRS registry ID 110007385524 (U.S. EPA ECHO) Agency record
Severity 1
Oneok Field Services Co Llc / Cheyenne Compressor Station, Selman
Air permit holder (minor source).
EPA FRS registry ID 110007386266 (U.S. EPA ECHO) Agency record
Severity 1
Plains Pipeline Lp/Basin Laverne Crude, Laverne
Air permit holder (minor source).
EPA FRS registry ID 110007388870 (U.S. EPA ECHO) Agency record
Severity 1
Dcp Midstream Lp/Buffalo Booster Sta, Buffalo
Air permit holder (minor source).
EPA FRS registry ID 110020903931 (U.S. EPA ECHO) Agency record
Severity 1
Oneok Field Svc/Doby Springs, Buffalo
Air permit holder (minor source).
EPA FRS registry ID 110021102484 (U.S. EPA ECHO) Agency record
Severity 1
Dcp Midstream Lp/South Lovedale Sta, Selman
Air permit holder (minor source).
EPA FRS registry ID 110022401836 (U.S. EPA ECHO) Agency record
Severity 1
Laverne Public Works Authority / Laverne Power Plant, Laverne
Air permit holder (minor source).
EPA FRS registry ID 110024520696 (U.S. EPA ECHO) Agency record
Severity 1

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 Harper 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 Harper 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.

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