CITY WATER-SYSTEM LEDGER
Barnstable, Massachusetts
EPA’s September 2026 export lists 4 active community water systems serving Barnstable, Massachusetts, with 0 current-violation flags and 0 serious-violator flags among the covered systems.
Source: EPA SDWIS system-search export · Active community systems serving 2,500+ people · Snapshot 13 Sep 2026
01 / SYSTEMS
Water systems serving Barnstable, Massachusetts
EPA associates 4 covered systems with Barnstable, Massachusetts; their reported population-served values total 95,338 and may overlap.
Ordered by reported population served. Open any record for separate health, monitoring, notice, other, and serious-violator flags.
| Water system | Population served | Primary source | Current export status |
|---|---|---|---|
| Centerville Osterville Marstons Mills WdMA4020002 | 50,000 | Ground water | No current violation flagged |
| Hyannis Water System, Town Of BarnstableMA4020004 | 35,000 | Ground water | No current violation flagged |
| Barnstable Fire DistrictMA4020000 | 5,400 | Ground water | No current violation flagged |
| Cotuit Fire District Water DepartmentMA4020003 | 4,938 | Ground water | No current violation flagged |
02 / SOURCE MIX
Primary water sources for Barnstable, Massachusetts
EPA classifies 4 systems serving Barnstable, Massachusetts across 1 primary-source categories; Ground water is the largest category with 4 systems.
It is the sum of each listed system's reported population served, not a census estimate. Service areas can overlap and some systems list multiple cities or counties.