State
Massachusetts: drinking water records
EPA lists 564 community water systems serving homes in Massachusetts. 262 took part in EPA's national PFAS survey (UCMR 5), and 144 found at least one PFAS above the level laboratories can measure.
In focus564community water systems
Public records. Clearer context.
0
ZIP reports published
564
community water systems
115
systems with a health-based violation since 2016
70
systems that reached the lead action level since 2016
Counties
- Barnstable County 32 systems
- Berkshire County 43 systems
- Bristol County 30 systems
- Dukes County 10 systems
- Essex County 40 systems
- Franklin County 30 systems
- Hampden County 29 systems
- Hampshire County 41 systems
- Middlesex County 96 systems
- Nantucket County 4 systems
- Norfolk County 42 systems
- Plymouth County 46 systems
- Suffolk County 5 systems
- Worcester County 109 systems
ZIP reports
Sources
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.