County · Massachusetts
Dukes County, Massachusetts: drinking water records
This overview covers 7 ZIP codes and 10 community water systems in Dukes County. It also stands in for 0 ZIP codes whose utility has too little EPA data for a page of its own.
System population figures are summed from EPA registry records and can overlap where wholesalers and retail systems serve the same people. They are not a Census county-population estimate.
Water systems with the most complete records
| Water system | People served | PFAS survey results | PFAS found | Health-based violations | Lead, 9 in 10 homes at or below |
|---|---|---|---|---|---|
| Oak Bluffs Water District MA4221000 | 24,000 | 300 | 2 | 0 | 3.9 ppb |
| Edgartown Water Department MA4089000 | 8,027 | 300 | 0 | 0 | 6 ppb |
| Tisbury Water Works MA4296000 | 6,082 | 180 | 0 | 0 | 7.2 ppb |
| Jemp 1 LLC RI2980323 | 28 | 0 | 0 | 1 | 27 ppb |
| Menemsha Water Company MA4062000 | 841 | 0 | 0 | 0 | 2.3 ppb |
| Westbury Park VT0020466 | 663 | 0 | 0 | 0 | 0 ppb |
| Gosnold Water Dept MA4109000 | 425 | 0 | 0 | 0 | 0 ppb |
| Nasonville Water District RI1900034 | 150 | 0 | 0 | 0 | 1 ppb |
| Kuehns Way LLC MA4296018 | 80 | 0 | 0 | 0 | 0 ppb |
| Scotts Grove LLC MA4296017 | 36 | 0 | 0 | 0 | 0 ppb |
ZIP reports in Dukes County
No ZIP report in this county is published yet.
Sources and scope
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.
Counts cover the systems that report this county to EPA. A water system may cross county lines. "Found" means at least one result at or above the laboratory reporting level; it is not a compliance finding.