MT / county FIPS 30075 / county research

Powder River County, Montana: environmental and disease records

Cancer mortality in Powder River County is 144.1 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 33 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (27), Public airport (2), Gas station (mapped facility) (2). 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: 45.3974, -105.6113.

How this county ranks in Montana

View on the heat map Scan an address in this county

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 Powder River County compared with the United States
Cancer	Measure	County rate	U.S. rate	Times U.S.	95% interval	Years
All cancer	Deaths	144.1	143.2	1.01x	84.1 to 239.2	2020-2024
All cancer	New cases	346.7	453.4	0.76x	248.7 to 478.2	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 Powder River County
Measure	County	U.S. median	Difference	Unit
Premature death	n/a	9,842.6	n/a	years of life lost before age 75 per 100,000
Life expectancy	77.5	75.3	+3%	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	117.6	96.9	+21%	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.

Formaldehyde10.12 per million
Carbon Tetrachloride2.72 per million
Acetaldehyde0.92 per million
Benzene0.72 per million

EPA Air Quality Index

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

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit27
Public airport2
Gas station (mapped facility)2
Air permit holder (minor source)1
Brownfield property1

Highest-severity records

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

Town Of Broadus Wwtf, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110009860622 (U.S. EPA ECHO) Agency record
Severity 4.5
Former Park Super Service, Broadus
Brownfield property.
EPA FRS registry ID 110071964325 (U.S. EPA Brownfields (ACRES)) Agency record
Severity 3
Broadus, Broadus
Public airport. O.
Record ID 00F (FAA / U.S. DOT)
Severity 2
Stevens Ranch, Ashland
Public airport. O.
Record ID 1M6 (FAA / U.S. DOT)
Severity 2
M&K Oil Company - Wright Creek Water Disposal Facility, Boyes
NPDES wastewater discharge permit.
EPA FRS registry ID 110010826179 (U.S. EPA ECHO) Agency record
Severity 1.5
Pinnacle Energy Group Oil/Gas Wells, Biddle
NPDES wastewater discharge permit.
EPA FRS registry ID 110011049542 (U.S. EPA ECHO) Agency record
Severity 1.5
Jr Merchant Suction Dredge, Volborg
NPDES wastewater discharge permit.
EPA FRS registry ID 110017696849 (U.S. EPA ECHO) Agency record
Severity 1.5
Jr Merchant Suction Dredge, Volborg
NPDES wastewater discharge permit.
EPA FRS registry ID 110024456471 (U.S. EPA ECHO) Agency record
Severity 1.5
Mdt Highway 212 Project Broadus, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110035855526 (U.S. EPA ECHO) Agency record
Severity 1.5
Martin Construction - Home Creek 318 Permit, Ashland
NPDES wastewater discharge permit.
EPA FRS registry ID 110037099939 (U.S. EPA ECHO) Agency record
Severity 1.5
United Parcel Service - Broadus Facility, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110044266585 (U.S. EPA ECHO) Agency record
Severity 1.5
Wickens Construction Wetlands And Streams Culverts And Bridges 318, Ashland
NPDES wastewater discharge permit.
EPA FRS registry ID 110054107621 (U.S. EPA ECHO) Agency record
Severity 1.5
Powder River Co. Commissioners - Powder River Co. Landfill, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110055208653 (U.S. EPA ECHO) Agency record
Severity 1.5
Oftedal Construction Hwy 59 S Of Biddle 318, Biddle
NPDES wastewater discharge permit.
EPA FRS registry ID 110055254040 (U.S. EPA ECHO) Agency record
Severity 1.5
Forks Ranch Plan Of Development Cbm Project, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110062644875 (U.S. EPA ECHO) Agency record
Severity 1.5
North Bradshaw Unit Phase 1 Federal, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110062644919 (U.S. EPA ECHO) Agency record
Severity 1.5
East Bear Creek Phase 1 Federal, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110062644928 (U.S. EPA ECHO) Agency record
Severity 1.5
Bradshaw Unit Ph 1 Fed, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110062666538 (U.S. EPA ECHO) Agency record
Severity 1.5
Bison Pipeline Llc Powder River County Pipeline 318, Biddle
NPDES wastewater discharge permit.
EPA FRS registry ID 110064591384 (U.S. EPA ECHO) Agency record
Severity 1.5
Greencore Pipeline - 9mile Ranch Creek Belle Creek 318, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110064601202 (U.S. EPA ECHO) Agency record
Severity 1.5
Oftedal Construction - Oftedal Yard, Biddle
NPDES wastewater discharge permit.
EPA FRS registry ID 110064603629 (U.S. EPA ECHO) Agency record
Severity 1.5
Greencore Pipeline Co - Belle Creek 318, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110064613841 (U.S. EPA ECHO) Agency record
Severity 1.5
North American Exploration - Third Creek North, Biddle
NPDES wastewater discharge permit.
EPA FRS registry ID 110064624394 (U.S. EPA ECHO) Agency record
Severity 1.5
Western Federal Lands Hwy Division - East Fork Otter Creek Road Mt Pfh 90-1(1), Ashland
NPDES wastewater discharge permit.
EPA FRS registry ID 110064629870 (U.S. EPA ECHO) Agency record
Severity 1.5
Four Beers Stillwater Excavating - D4 Culverts Phase Iv Powder River County, Broadus
NPDES wastewater discharge permit.
EPA FRS registry ID 110064630840 (U.S. EPA ECHO) Agency record
Severity 1.5

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 Powder River County

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

Scan an address in Powder River County View on the heat map All Montana counties