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Grant County, Oregon: environmental and disease records

Cancer mortality in Grant County is 157.8 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 45 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (15), Public airport (10), Gas station (mapped facility) (7). 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: 44.4769, -119.0095.

How this county ranks in Oregon

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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 Grant County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Bladder	New cases	26.1	18.7	1.4x	14.3 to 46.2	2019-2023
Lung & bronchus	Deaths	35.9	30.2	1.19x	23.9 to 54.8	2020-2024
All cancer	Deaths	157.8	143.2	1.1x	130 to 192	2020-2024
All cancer	New cases	351.7	453.4	0.78x	302.9 to 407.6	2019-2023
Lung & bronchus	New cases	39.4	51.8	0.76x	27.3 to 58.5	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 Grant County
Measure	County	U.S. median	Difference	Unit
Premature death	6,070.8	9,842.6	-38%	years of life lost before age 75 per 100,000
Life expectancy	79.7	75.3	+6%	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	127.6	96.9	+32%	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.

Formaldehyde12.42 per million
Carbon Tetrachloride2.63 per million
Acetaldehyde1.71 per million
Naphthalene1.25 per million

EPA Air Quality Index 2025

Monitored on 364 days: 230 good, 0 unhealthy for sensitive groups or worse. Median AQI 37, peak 89.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit15
Public airport10
Gas station (mapped facility)7
Brownfield property4
Auto repair or body shop (mapped facility)3
Major air pollution source1
EPA air quality monitor1
Commercial airport1
Heliport1
Biomass power plant1
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.

Dayville Stp, Dayville
NPDES wastewater discharge permit. Penalties $12,600.
EPA FRS registry ID 110039770959 (U.S. EPA ECHO) Agency record
Severity 5
Prairie Wood Products And Co-Gen Facility, Prairie City
Major air pollution source.
EPA FRS registry ID 110001654852 (U.S. EPA ECHO) Agency record
Severity 3.8
Prairie Wood Products And Co-Gen Facility, Prairie City
NPDES wastewater discharge permit.
EPA FRS registry ID 110001654852 (U.S. EPA ECHO) Agency record
Severity 3.3
Grant County Airport Industrial Park, John Day
Brownfield property.
EPA FRS registry ID 110038748148 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Blue Mtn. Jr. High, John Day
Brownfield property.
EPA FRS registry ID 110041721152 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Edward Hines Indusrial Park, Seneca
Brownfield property.
EPA FRS registry ID 110071967254 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Blue Mtn Ranchers Supply (Former), Prairie City
Brownfield property.
EPA FRS registry ID 110071983390 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Co-Gen Llc, Prairie City
Biomass power plant.
Record ID 50921 (U.S. Energy Information Administration)
Severity 2.5
Monument Muni, Monument
Public airport. O.
Record ID 12S (FAA / U.S. DOT)
Severity 2
Grant County Rgnl/Ogilvie Fld, John Day
Commercial airport. O.
Record ID GCD (FAA / U.S. DOT)
Severity 2
John Day Sewage Treatment Plant
Wastewater plant (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/394444528 (OpenStreetMap contributors) Agency record
Severity 2
Long Creek Stp, Long Creek
NPDES wastewater discharge permit.
EPA FRS registry ID 110006695870 (U.S. EPA ECHO) Agency record
Severity 1.8
Mt Vernon Stp, Mount Vernon
NPDES wastewater discharge permit.
EPA FRS registry ID 110009816869 (U.S. EPA ECHO) Agency record
Severity 1.5
Malheur Lumber Co, John Day
NPDES wastewater discharge permit.
EPA FRS registry ID 110014087200 (U.S. EPA ECHO) Agency record
Severity 1.5
Odot - Austin Maintenance Facility, Bates
NPDES wastewater discharge permit.
EPA FRS registry ID 110069572028 (U.S. EPA ECHO) Agency record
Severity 1.5
Wastewater System Improvements, Seneca
NPDES wastewater discharge permit.
EPA FRS registry ID 110070529774 (U.S. EPA ECHO) Agency record
Severity 1.5
City Of Mt. Vernon Wastewater System Improvements, Mt. Vernon
NPDES wastewater discharge permit.
EPA FRS registry ID 110070624894 (U.S. EPA ECHO) Agency record
Severity 1.5
Faiman Well Intertie, Prairie City
NPDES wastewater discharge permit.
EPA FRS registry ID 110070627785 (U.S. EPA ECHO) Agency record
Severity 1.5
The Ridge- John Day, John Day
NPDES wastewater discharge permit.
EPA FRS registry ID 110071400928 (U.S. EPA ECHO) Agency record
Severity 1.5
Desolation Creek Reach 3 Restoration, Dale
NPDES wastewater discharge permit.
EPA FRS registry ID 110071401345 (U.S. EPA ECHO) Agency record
Severity 1.5
Murderers Creek, John Day
NPDES wastewater discharge permit.
EPA FRS registry ID 110071655976 (U.S. EPA ECHO) Agency record
Severity 1.5
Rehabilitate Runway 9-27, John Day
NPDES wastewater discharge permit.
EPA FRS registry ID 110071661610 (U.S. EPA ECHO) Agency record
Severity 1.5
Oxbow Conservation Area, Bates
NPDES wastewater discharge permit.
EPA FRS registry ID 110071994518 (U.S. EPA ECHO) Agency record
Severity 1.5
The Ridge Lot 1 And 2, John Day
NPDES wastewater discharge permit.
EPA FRS registry ID 110072164039 (U.S. EPA ECHO) Agency record
Severity 1.5
Fuel Station
Gas station (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID node/10960940894 (OpenStreetMap contributors) 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 Grant County

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