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Asotin County, Washington: environmental and disease records

Cancer mortality in Asotin County is 136.6 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 29 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (15), Gas station (mapped facility) (3), Auto repair or body shop (mapped facility) (2). 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: 46.2284, -117.1876.

How this county ranks in Washington

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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 Asotin County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
Melanoma of the skin	New cases	31.5	23.8	1.32x	22.8 to 42.8	2019-2023
Pancreas	Deaths	14.4	11.3	1.27x	9.3 to 21.9	2020-2024
Thyroid	New cases	15	13	1.15x	8.2 to 24.9	2019-2023
All cancer	Deaths	136.6	143.2	0.95x	120.4 to 154.9	2020-2024
Pancreas	New cases	12.7	13.9	0.91x	7.8 to 20.1	2019-2023
Lung & bronchus	Deaths	24.6	30.2	0.81x	18.1 to 33.2	2020-2024
All cancer	New cases	314.8	453.4	0.69x	286.2 to 345.7	2019-2023
Non-Hodgkin lymphoma	New cases	11.7	18.5	0.63x	7.3 to 18.4	2019-2023
Kidney & renal pelvis	New cases	10.4	17.9	0.58x	5.6 to 17.8	2019-2023
Lung & bronchus	New cases	29.9	51.8	0.58x	22.7 to 39.3	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 Asotin County
Measure	County	U.S. median	Difference	Unit
Premature death	9,609.8	9,842.6	-2%	years of life lost before age 75 per 100,000
Life expectancy	76.7	75.3	+2%	years
Child mortality	55.8	59.8	-7%	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	102.7	96.9	+6%	deaths per 100,000
Drug overdose deaths	31	28.6	+8%	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.

Formaldehyde16.71 per million
Carbon Tetrachloride2.85 per million
Acetaldehyde2.34 per million
Naphthalene1.93 per million

EPA Air Quality Index 2025

Monitored on 362 days: 224 good, 3 unhealthy for sensitive groups or worse. Median AQI 42, peak 151.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit15
Gas station (mapped facility)3
Auto repair or body shop (mapped facility)2
Heliport2
EPA air quality monitor1
Air permit holder (minor source)1
Public airport1
Large greenhouse gas emitter1
Small hazardous waste generator1
Hazardous waste transporter1
Toxic chemical release facility (TRI)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.

Guy Bennett Lumber Co, Clarkston
Toxic chemical release facility (TRI). Chemicals: Lead. Reports carcinogens. 40 lbs released over 5 years.
TRI facility ID 99403GYBNN25WIL (U.S. EPA Toxics Release Inventory)
Severity 5.7
Asotin County Landfill, Clarkston
Large greenhouse gas emitter.
EPA FRS registry ID 110014017241 (U.S. EPA ECHO) Agency record
Severity 5.5
Asotin Stp, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110006685186 (U.S. EPA ECHO) Agency record
Severity 4.5
Cottonwood Acclimation Pond, Anatone
NPDES wastewater discharge permit.
EPA FRS registry ID 110006800756 (U.S. EPA ECHO) Agency record
Severity 4.5
Asotin County Landfill, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110014017241 (U.S. EPA ECHO) Agency record
Severity 4.5
Clarkston City, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110020785284 (U.S. EPA ECHO) Agency record
Severity 4.5
Clarkston Wwtp, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110020785300 (U.S. EPA ECHO) Agency record
Severity 4.5
City Of Asotin, Asotin
NPDES wastewater discharge permit.
EPA FRS registry ID 110054897796 (U.S. EPA ECHO) Agency record
Severity 4.5
Asotin County, Asotin
NPDES wastewater discharge permit.
EPA FRS registry ID 110054897821 (U.S. EPA ECHO) Agency record
Severity 4.5
Steelman Duff Inc, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110036124280 (U.S. EPA ECHO) Agency record
Severity 4.3
Atlas Sand And Rock Evans Rd Pit, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110043829337 (U.S. EPA ECHO) Agency record
Severity 4.3
Asotin County Justic Complex, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110071469596 (U.S. EPA ECHO) Agency record
Severity 3.8
Asotin County Regional Landfill, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110071238998 (U.S. EPA ECHO) Agency record
Severity 2.8
Tri State Memorial Hospital, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110015441217 (U.S. EPA ECHO) Agency record
Severity 2.5
Bridge 2nd Diagonal Intersection Improvements, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110071813767 (U.S. EPA ECHO) Agency record
Severity 2.5
Nelson Warehouse, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110071850033 (U.S. EPA ECHO) Agency record
Severity 2.5
Clarkston 2021 Stormwater Retrofit, Clarkston
NPDES wastewater discharge permit.
EPA FRS registry ID 110072075294 (U.S. EPA ECHO) Agency record
Severity 2.3
Wal Mart Supercenter 2006, Clarkston
Small hazardous waste generator.
EPA FRS registry ID 110039224844 (U.S. EPA ECHO) Agency record
Severity 1.5
Coleman Oil Company, Clarkston
Air permit holder (minor source).
EPA FRS registry ID 110040835932 (U.S. EPA ECHO) Agency record
Severity 1
Us Doe Bpa Clarkston Maintenance Hq, Clarkston
Hazardous waste transporter.
EPA FRS registry ID 110071214775 (U.S. EPA ECHO) Agency record
Severity 1
Cenex
Gas station (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID node/2619818994 (OpenStreetMap contributors) Agency record
Severity 1
Costco Gasoline
Gas station (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID node/9838866406 (OpenStreetMap contributors) Agency record
Severity 1
Costa's Auto Repair Service
Auto repair or body shop (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/447940056 (OpenStreetMap contributors) Agency record
Severity 1
Jiffy Lube
Auto repair or body shop (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/447940064 (OpenStreetMap contributors) Agency record
Severity 1
Cenex
Gas station (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/447940108 (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 Asotin County

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