PWSID
MA4265000
State
Massachusetts
City
SEEKONK
Population served
14,704
Primary source
Groundwater
Score history
▼ 14 points — the score moved from 100 to 86 on Jun 18, 2026, as newly published EPA data was incorporated.
2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.
PFAS & contaminant readings
Latest detections from EPA’s UCMR5 monitoring (through Sep 2024). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
5 ppt
limit 4 ppt
Violations & enforcement
6
Violations on record
0
Unaddressed
5
Health-based
11
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Nov 2011. Official EPA record →
Recent enforcement actions
- State action · SFL Nov 2011
- State action · SOX Nov 2011
- State action · SOX Nov 2007
- State action · SFL Nov 2007
- State action · SOX Oct 2002
- State action · SFL Feb 2001
- State action · SFL Jul 1998
- State action · SFL Jan 1998
This profile is built from EPA public records for system MA4265000 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.