PWSID
MA4082000
State
Massachusetts
City
DUXBURY
Population served
16,387
Primary source
Groundwater
Score history
▼ 81 points — the score moved from 100 to 19 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 Jan 2025). Levels in parts per trillion (ppt).
PFOS
Perfluorooctanesulfonic acid
35 ppt
limit 4 ppt
PFHxS
Perfluorohexanesulfonic acid
28 ppt
limit 10 ppt
PFOA
Perfluorooctanoic acid
5.1 ppt
limit 4 ppt
PFPeA
40 ppt
limit —
PFHxA
28 ppt
limit —
PFBA
10 ppt
limit —
PFHpA
9.3 ppt
limit —
6:2 FTS
5.7 ppt
limit —
PFBS
3.4 ppt
limit —
PFHpS
3.1 ppt
limit —
Violations & enforcement
6
Violations on record
0
Unaddressed
4
Health-based
17
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Nov 2023. Official EPA record →
Recent enforcement actions
- State action · SFO Nov 2023
- State action · SFL Aug 2022
- State action · SOX Aug 2022
- State action · SFL Feb 2022
- State action · SOX Sep 2021
- State action · SFL Aug 2021
- State action · SFJ Jul 2021
- State action · SFL Feb 2016
This profile is built from EPA public records for system MA4082000 — 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.