PWSID
MA3184000
State
Massachusetts
City
MIDDLETON
Population served
7,255
Primary source
SWP
Score history
▼ 11 points — the score moved from 100 to 89 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 Apr 2024). Levels in parts per trillion (ppt).
PFOA
Perfluorooctanoic acid
4.5 ppt
limit 4 ppt
PFPeA
11 ppt
limit —
PFHxA
7.1 ppt
limit —
PFHpA
6 ppt
limit —
PFBS
3 ppt
limit —
Violations & enforcement
8
Violations on record
0
Unaddressed
0
Health-based
16
Enforcement actions
From EPA ECHO (SDWIS), most recent enforcement Dec 2024. Official EPA record →
Recent enforcement actions
- State action · SFL Dec 2024
- State action · SFL Jan 2022
- State action · SFL Dec 2018
- State action · SFL Sep 2018
- State action · SFJ Aug 2014
- State action · SOX Aug 2014
- State action · SFL Aug 2011
- State action · SOX Aug 2011
This profile is built from EPA public records for system MA3184000 — 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.