Water system · PWSID MA3166000
MANCHESTER BY THE SEA DPW
PWSID
MA3166000
State
Massachusetts
City
MANCHESTER BY THE SEA
Population served
5,170
Primary source
Surface water
Score history
▼ 27 points — the score moved from 100 to 73 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 Aug 2025). Levels in parts per trillion (ppt).
PFOA
Perfluorooctanoic acid
12 ppt
limit 4 ppt
PFOS
Perfluorooctanesulfonic acid
4.8 ppt
limit 4 ppt
PFBS
5 ppt
limit —
PFHxA
5 ppt
limit —
PFPeA
4.3 ppt
limit —
PFHpA
4 ppt
limit —
Violations & enforcement
11
Violations on record
0
Unaddressed
4
Health-based
35
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Dec 2020. Official EPA record →
Recent enforcement actions
- State action · SFL Dec 2020
- State action · SOX Dec 2016
- State action · SFL Dec 2015
- State action · SFJ Oct 2015
- State action · SFJ Oct 2014
- State action · SOX Aug 2014
- State action · SFJ Aug 2014
- State action · SFJ Dec 2013
This profile is built from EPA public records for system MA3166000 — 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.