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Mason County, Texas: environmental and disease records

Cancer mortality in Mason County is 183.6 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 19 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (11), Public airport (7), Hazardous waste transporter (1). 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: 30.7671, -99.2242.

How this county ranks in Texas

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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 Mason County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
All cancer	Deaths	183.6	143.2	1.28x	138.1 to 242.2	2020-2024
All cancer	New cases	466.1	453.4	1.03x	389 to 556.2	2019-2023

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 Mason County
Measure	County	U.S. median	Difference	Unit
Premature death	11,918.5	9,842.6	+21%	years of life lost before age 75 per 100,000
Life expectancy	75.3	75.3	+0%	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	96	96.9	-1%	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.

Formaldehyde16.78 per million
Carbon Tetrachloride2.78 per million
Acetaldehyde1.19 per million
Benzene0.5 per million

EPA Air Quality Index

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

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit11
Public airport7
Hazardous waste transporter1

Highest-severity records

The 25 records with the highest Envyrofax severity in the county, with the agency identifier to cite in a records request.

City Of Mason Wwtp, Mason
NPDES wastewater discharge permit. Penalties $19,250.
EPA FRS registry ID 110009746695 (U.S. EPA ECHO) Agency record
Severity 5
Mason County, Mason
Public airport. O.
Record ID T92 (FAA / U.S. DOT)
Severity 2
City Of Mason Landfill, Mason
NPDES wastewater discharge permit.
EPA FRS registry ID 110034315159 (U.S. EPA ECHO) Agency record
Severity 1.5
Mason Plant 20, Mason
NPDES wastewater discharge permit.
EPA FRS registry ID 110034802890 (U.S. EPA ECHO) Agency record
Severity 1.5
Mason County Airport, Mason
NPDES wastewater discharge permit.
EPA FRS registry ID 110035296649 (U.S. EPA ECHO) Agency record
Severity 1.5
Star Container, Mason
NPDES wastewater discharge permit.
EPA FRS registry ID 110070357786 (U.S. EPA ECHO) Agency record
Severity 1.5
Mag Materials Pit, Voca
NPDES wastewater discharge permit.
EPA FRS registry ID 110070358626 (U.S. EPA ECHO) Agency record
Severity 1.5
Zesch Pit, Mason
NPDES wastewater discharge permit.
EPA FRS registry ID 110070562484 (U.S. EPA ECHO) Agency record
Severity 1.5
Mason East Msw Landfill, Mason
NPDES wastewater discharge permit.
EPA FRS registry ID 110070791800 (U.S. EPA ECHO) Agency record
Severity 1.5
Mason Plant, Mason
NPDES wastewater discharge permit.
EPA FRS registry ID 110071376566 (U.S. EPA ECHO) Agency record
Severity 1.5
Mason Switch To Mason, Mason
NPDES wastewater discharge permit.
EPA FRS registry ID 110071849877 (U.S. EPA ECHO) Agency record
Severity 1.5
Aep Mason To Yellowjacket Rebuild, Grit
NPDES wastewater discharge permit.
EPA FRS registry ID 110072249954 (U.S. EPA ECHO) Agency record
Severity 1.5
Txr Environmental Services, Mason
Hazardous waste transporter.
EPA FRS registry ID 110072062434 (U.S. EPA ECHO) Agency record
Severity 1
B Flying Ranch, Mason
Public airport. O.
Record ID 0TA8 (FAA / U.S. DOT)
Severity 0.5
Red Sands Ranch, Mason
Public airport. O.
Record ID 1XS4 (FAA / U.S. DOT)
Severity 0.5
Eagle Rock Ranch, Pontotoc
Public airport. O.
Record ID 3XA7 (FAA / U.S. DOT)
Severity 0.5
Bar Triangle, Mason
Public airport. O.
Record ID 5TX1 (FAA / U.S. DOT)
Severity 0.5
Snowden Fld, Mason
Public airport. O.
Record ID 6TX1 (FAA / U.S. DOT)
Severity 0.5
Harkey Ranch, Mason
Public airport. O.
Record ID 8TX6 (FAA / U.S. DOT)
Severity 0.5

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 Mason County

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