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Mayes County, Oklahoma: environmental and disease records

Cancer mortality in Mayes County is 189.1 deaths per 100,000 people per year against a U.S. rate of 143.2, a statistically significant excess. The strongest disease signals are Esophagus deaths at 2 times the U.S. rate and Lung & bronchus deaths at 1.7 times the U.S. rate. Federal databases place 275 regulated facilities, sites and hazards inside the county, led by Air permit holder (minor source) (89), Rail grade crossing (69), NPDES wastewater discharge permit (26). 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: 36.2891, -95.2207.

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 Mayes County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Esophagus	Deaths	7.4	3.7	2xSignificant	4.5 to 11.6	2020-2024
Esophagus	New cases	9.2	4.6	2xSignificant	5.9 to 13.9	2019-2023
Kidney & renal pelvis	New cases	31.9	17.9	1.78xSignificant	25 to 40.2	2019-2023
Lung & bronchus	Deaths	52.7	30.2	1.75xSignificant	44.2 to 62.4	2020-2024
Non-Hodgkin lymphoma	Deaths	8.2	4.8	1.71xSignificant	5 to 12.8	2020-2024
Liver & bile duct	Deaths	11.1	6.6	1.68xSignificant	7.5 to 16	2020-2024
Lung & bronchus	New cases	74.5	51.8	1.44xSignificant	64.4 to 85.8	2019-2023
Non-Hodgkin lymphoma	New cases	25.6	18.5	1.38xSignificant	19.6 to 33	2019-2023
All cancer	Deaths	189.1	143.2	1.32xSignificant	172.6 to 207	2020-2024
Leukemia	Deaths	6.7	5.7	1.18x	3.9 to 10.9	2020-2024
Thyroid	New cases	15	13	1.15x	10 to 21.6	2019-2023
All cancer	New cases	510.8	453.4	1.13xSignificant	482.7 to 540.3	2019-2023
Bladder	New cases	20.8	18.7	1.11x	15.7 to 27.3	2019-2023
Leukemia	New cases	15.9	14.5	1.1x	11.2 to 22.1	2019-2023
Pancreas	New cases	15	13.9	1.08x	10.6 to 20.8	2019-2023
Liver & bile duct	New cases	8.5	8.7	0.98x	5.5 to 12.8	2019-2023
Melanoma of the skin	New cases	22.3	23.8	0.94x	16.5 to 29.6	2019-2023
Pancreas	Deaths	9.9	11.3	0.88x	6.5 to 14.6	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 Mayes County
Measure	County	U.S. median	Difference	Unit
Premature death	12,605.7	9,842.6	+28%	years of life lost before age 75 per 100,000
Life expectancy	72.2	75.3	-4%	years
Child mortality	71.1	59.8	+19%	deaths under age 18 per 100,000
Infant mortality	7.7	6.2	+23%	deaths under age 1 per 1,000 live births
Injury deaths	107.9	96.9	+11%	deaths per 100,000
Drug overdose deaths	30	28.6	+5%	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.

Formaldehyde20.79 per million
Carbon Tetrachloride2.91 per million
Acetaldehyde1.84 per million
Benzene0.84 per million

EPA Air Quality Index 2025

Monitored on 285 days: 260 good, 0 unhealthy for sensitive groups or worse. Median AQI 37, peak 87.

Regulated facilities, sites and hazards by type

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

Air permit holder (minor source)89
Rail grade crossing69
NPDES wastewater discharge permit26
Gas station (mapped facility)21
Toxic chemical release facility (TRI)14
TRI reporting facility13
Major air pollution source8
Small hazardous waste generator7
Brownfield property5
Public airport4
Large greenhouse gas emitter4
Heliport4
Hydroelectric plant2
Gas power plant2
EPA air quality monitor1
Large hazardous waste generator1
Hazardous waste transporter1
Landfill (mapped facility)1
Pumped storage plant1
Scrapyard (mapped facility)1
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.

Lsb Chemical L.L.C., Pryor
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia, Methanol, Chromium compounds (except for chromite ore mined in the Transvaal Region) and 4 more. Reports carcinogens. 10,670,239 lbs released over 5 years.
TRI facility ID 74361WLGRF5THHU (U.S. EPA Toxics Release Inventory)
Severity 9.9
Grand River Dam Authority Coal Fired Complex, Chouteau
Toxic chemical release facility (TRI). Chemicals: Barium compounds (except for barium sulfate (CAS No. 7727-43-7)), Manganese compounds, Lead compounds, Hydrogen fluoride and 2 more. Reports carcinogens. 1,116,046 lbs released over 5 years.
TRI facility ID 74337GRNDR3MIEO (U.S. EPA Toxics Release Inventory)
Severity 9.1
Grand River Dam Auth/Chouteau Coal Fired Complex, Chouteau
TRI reporting facility. Penalties $5,670.
EPA FRS registry ID 110000598489 (U.S. EPA ECHO) Agency record
Severity 9.1
Norit Americas Inc, Pryor
Toxic chemical release facility (TRI). Chemicals: Hydrochloric acid (acid aerosols including mists, vapors, gas, fog, and other airborne forms of any particle size), Polycyclic aromatic compounds, Lead, Phenanthrene and 2 more. Reports carcinogens. 234,575 lbs released over 5 years.
TRI facility ID 74362TCHMN6THHU (U.S. EPA Toxics Release Inventory)
Severity 8.6
Pryor Solae, Pryor
Toxic chemical release facility (TRI). Chemicals: Nitrate compounds (water dissociable; reportable only when in aqueous solution), Ammonia, Sodium nitrite, Hydrogen sulfide. 12,989,746 lbs released over 5 years.
TRI facility ID 74362PRTNTHUNTS (U.S. EPA Toxics Release Inventory)
Severity 8.5
Lone Star Ind. Inc. Dba Buzzi Unicem Usa Pryor Cement Plant, Pryor
Toxic chemical release facility (TRI). Chemicals: Acetaldehyde, Formaldehyde, Zinc compounds, Aluminum oxide (fibrous forms) and 4 more. Reports carcinogens. 110,486 lbs released over 5 years.
TRI facility ID 74361LNSTR5MILE (U.S. EPA Toxics Release Inventory)
Severity 8.4
American Castings Llc, Pryor
Toxic chemical release facility (TRI). Chemicals: Manganese compounds, Manganese And Manganese Compounds, Lead compounds, Copper compounds and 4 more. Reports carcinogens. 75,930 lbs released over 5 years.
TRI facility ID 74361PRYRFHUNTS (U.S. EPA Toxics Release Inventory)
Severity 8.2
Interplastic Corp, Pryor
Toxic chemical release facility (TRI). Chemicals: Styrene, Phthalic anhydride, Dicyclopentadiene, Maleic anhydride and 4 more. Reports carcinogens. 75,588 lbs released over 5 years.
TRI facility ID 74362NTRPLHUNTS (U.S. EPA Toxics Release Inventory)
Severity 8.2
Lone Star Ind Inc - Buzzi Unicem Usa - Pryor Cement Plant, Pryor
TRI reporting facility. Penalties $6,426.
EPA FRS registry ID 110000598504 (U.S. EPA ECHO) Agency record
Severity 7.9
Pryor Chem Co, Pryor
TRI reporting facility.
EPA FRS registry ID 110000598531 (U.S. EPA ECHO) Agency record
Severity 7.3
American Casting, Pryor
TRI reporting facility. Penalties $6,930.
EPA FRS registry ID 110000598513 (U.S. EPA ECHO) Agency record
Severity 7.2
Gap Roofing Inc, Pryor
Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds. Reports carcinogens. 3,404 lbs released over 5 years.
TRI facility ID 74361GPRFN4444H (U.S. EPA Toxics Release Inventory)
Severity 7.2
Aptus Manufacturing I Llc, Pryor
Toxic chemical release facility (TRI). Chemicals: Polycyclic aromatic compounds. Reports carcinogens. 3,354 lbs released over 5 years.
TRI facility ID 7436WPTSMN4444H (U.S. EPA Toxics Release Inventory)
Severity 7.2
Solae Co Llc/Soy Isolate Prod Plt, Pryor
TRI reporting facility.
EPA FRS registry ID 110004751108 (U.S. EPA ECHO) Agency record
Severity 7
Pryor Resin Mfg Faclty, Pryor
TRI reporting facility.
EPA FRS registry ID 110000598540 (U.S. EPA ECHO) Agency record
Severity 6.6
Lone Star Ind Inc - Buzzi Unicem Usa - Pryor Cement Plant, Pryor
Major air pollution source. Penalties $6,426.
EPA FRS registry ID 110000598504 (U.S. EPA ECHO) Agency record
Severity 6.5
Norit Activated Carbon, Pryor
TRI reporting facility.
EPA FRS registry ID 110000606808 (U.S. EPA ECHO) Agency record
Severity 6.4
Grand River Dam Auth/Chouteau Coal Fired Complex, Chouteau
Major air pollution source. Penalties $5,670.
EPA FRS registry ID 110000598489 (U.S. EPA ECHO) Agency record
Severity 6.3
Rae Corp, Pryor
Toxic chemical release facility (TRI). Chemicals: Copper, Chromium, Nickel, Lead and 1 more. Reports carcinogens. 82 lbs released over 5 years.
TRI facility ID 74361RMNFC6THAN (U.S. EPA Toxics Release Inventory)
Severity 6
Grand River Dam Auth/Chouteau Coal Fired Complex, Chouteau
NPDES wastewater discharge permit. Penalties $5,670.
EPA FRS registry ID 110000598489 (U.S. EPA ECHO) Agency record
Severity 5.8
Rae Corp / Pryor Plant, Pryor
TRI reporting facility. Penalties $5,000.
EPA FRS registry ID 110000598522 (U.S. EPA ECHO) Agency record
Severity 5.6
Aptus Manufacturing I, Llc, Pryor
TRI reporting facility.
EPA FRS registry ID 110070244735 (U.S. EPA ECHO) Agency record
Severity 5.5
Gap Roofing Co / Saturated Felt Plant, Pryor
TRI reporting facility.
EPA FRS registry ID 110007164601 (U.S. EPA ECHO) Agency record
Severity 5.5
Locust Grove Public Works Auth, Locust Grove
NPDES wastewater discharge permit. Penalties $32,313.
EPA FRS registry ID 110011009069 (U.S. EPA ECHO) Agency record
Severity 5
American Casting, Pryor
Major air pollution source. Penalties $6,930.
EPA FRS registry ID 110000598513 (U.S. EPA ECHO) Agency record
Severity 4.8

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 Mayes 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 Mayes 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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