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Dukes County, Massachusetts: environmental and disease records

Cancer mortality in Dukes County is 118.6 deaths per 100,000 people per year against a U.S. rate of 143.2. Federal databases place 79 regulated facilities, sites and hazards inside the county, led by NPDES wastewater discharge permit (18), Small hazardous waste generator (15), Industrial wastewater discharge (12). 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: 41.3918, -70.6196.

How this county ranks in Massachusetts

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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 Dukes 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	27.7	23.8	1.16x	20 to 38	2019-2023
Non-Hodgkin lymphoma	New cases	17.6	18.5	0.95x	11.6 to 26.3	2019-2023
All cancer	New cases	415.4	453.4	0.92x	383.3 to 449.8	2019-2023
Pancreas	New cases	12.2	13.9	0.88x	7.3 to 19.9	2019-2023
Pancreas	Deaths	9.9	11.3	0.88x	5.9 to 16.4	2020-2024
Kidney & renal pelvis	New cases	15.5	17.9	0.87x	9.4 to 24.5	2019-2023
Lung & bronchus	New cases	43.3	51.8	0.84x	34.4 to 54.5	2019-2023
All cancer	Deaths	118.6	143.2	0.83x	102.8 to 136.6	2020-2024
Bladder	New cases	12.1	18.7	0.65x	7.8 to 18.9	2019-2023
Leukemia	New cases	8.3	14.5	0.57x	4.9 to 14.4	2019-2023
Lung & bronchus	Deaths	16.9	30.2	0.56x	11.6 to 24.6	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 Dukes County
Measure	County	U.S. median	Difference	Unit
Premature death	4,473.3	9,842.6	-55%	years of life lost before age 75 per 100,000
Life expectancy	83.1	75.3	+10%	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	74.4	96.9	-23%	deaths per 100,000
Drug overdose deaths	33.7	28.6	+18%	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.

Formaldehyde9.37 per million
Carbon Tetrachloride3.02 per million
Benzene0.8 per million
Acetaldehyde0.62 per million

EPA Air Quality Index 2025

Monitored on 341 days: 327 good, 2 unhealthy for sensitive groups or worse. Median AQI 35, peak 151.

Regulated facilities, sites and hazards by type

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

NPDES wastewater discharge permit18
Small hazardous waste generator15
Industrial wastewater discharge12
Air permit holder (minor source)8
Gas station (mapped facility)6
Public airport3
Heliport3
Solar power plant3
Major air pollution source2
Landfill (mapped facility)2
Oil-fired power plant2
EPA air quality monitor1
Airfield1
Commercial airport1
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.

Martha'S Vineyard, Vineyard Haven
Commercial airport. O.
Record ID MVY (FAA / U.S. DOT)
Severity 5
Oak Bluffs Diesel Generating Facility, Oak Bluffs
Oil-fired power plant.
Record ID 1597 (U.S. Energy Information Administration)
Severity 4
West Tisbury Generating Facility, West Tisbury
Oil-fired power plant.
Record ID 6049 (U.S. Energy Information Administration)
Severity 4
Nrg Canal Llc - West Tisbury, West Tisbury
Major air pollution source.
EPA FRS registry ID 110003501283 (U.S. EPA ECHO) Agency record
Severity 3.5
MarthaâS Vineyard Generating Station, Oak Bluffs
Major air pollution source.
EPA FRS registry ID 110003501292 (U.S. EPA ECHO) Agency record
Severity 3.5
Marthas Vineyard Shipyard Inc, Tisbury
NPDES wastewater discharge permit.
EPA FRS registry ID 110008399820 (U.S. EPA ECHO) Agency record
Severity 3.3
Sunrise Wind Project - Boem Renewable Lease Area Ocs-A0487, Atlantic Ocean
NPDES wastewater discharge permit.
EPA FRS registry ID 110071202224 (U.S. EPA ECHO) Agency record
Severity 3.3
Rm Packer Heating Fuel Terminal, Tisbury
NPDES wastewater discharge permit.
EPA FRS registry ID 110003484104 (U.S. EPA ECHO) Agency record
Severity 2.8
Rm Packer Heating Fuel Terminal, Tisbury
Air permit holder (minor source).
EPA FRS registry ID 110003484104 (U.S. EPA ECHO) Agency record
Severity 2.3
Katama Airpark, Edgartown
Public airport. O.
Record ID 1B2 (FAA / U.S. DOT)
Severity 2
Edgartown Wastewater Facility
Wastewater plant (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/1302111183 (OpenStreetMap contributors) Agency record
Severity 2
Town of Oak Bluffs Landfill
Landfill (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/139263896 (OpenStreetMap contributors) Agency record
Severity 2
Landfill
Landfill (mapped facility). Mapped facility presence only; no compliance or exposure measurements.
Record ID way/698317203 (OpenStreetMap contributors) Agency record
Severity 2
Marthas Vineyard Hospital, Oak Bluffs
Small hazardous waste generator.
EPA FRS registry ID 110002017950 (U.S. EPA ECHO) Agency record
Severity 1.5
Edgartown Marine Inc, Edgartown
NPDES wastewater discharge permit.
EPA FRS registry ID 110003478040 (U.S. EPA ECHO) Agency record
Severity 1.5
Marthas Vineyard Airport, West Tisbury
Small hazardous waste generator.
EPA FRS registry ID 110008411110 (U.S. EPA ECHO) Agency record
Severity 1.5
Marthas Vineyard Airport, West Tisbury
NPDES wastewater discharge permit.
EPA FRS registry ID 110008411110 (U.S. EPA ECHO) Agency record
Severity 1.5
Dutchers Dock, Chilmark
Small hazardous waste generator.
EPA FRS registry ID 110008415526 (U.S. EPA ECHO) Agency record
Severity 1.5
Safe Harbor Vineyard Haven, Tisbury
Small hazardous waste generator.
EPA FRS registry ID 110044756975 (U.S. EPA ECHO) Agency record
Severity 1.5
Wh Russell, Vineyard Haven
Small hazardous waste generator.
EPA FRS registry ID 110056277826 (U.S. EPA ECHO) Agency record
Severity 1.5
Stop & Shop Supermarket 0398, Edgartown
Small hazardous waste generator.
EPA FRS registry ID 110064391046 (U.S. EPA ECHO) Agency record
Severity 1.5
Prime Marina Edgartown, Edgartown
Small hazardous waste generator.
EPA FRS registry ID 110069519596 (U.S. EPA ECHO) Agency record
Severity 1.5
Prime Marina Vineyard Haven, Vineyard Haven
NPDES wastewater discharge permit.
EPA FRS registry ID 110069994347 (U.S. EPA ECHO) Agency record
Severity 1.5
Prime Marina Edgartown, Edgartown
NPDES wastewater discharge permit.
EPA FRS registry ID 110070002314 (U.S. EPA ECHO) Agency record
Severity 1.5
Stop & Shop Supermarket 0423, Tisbury
Small hazardous waste generator.
EPA FRS registry ID 110070126395 (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 Dukes County

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