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Water system · PWSID MA4182000

MIDDLEBOROUGH WATER SUPPLY

MIDDLEBOROUGH, MA · ~15,350 people served

Check your exact address → MIDDLEBOROUGH overview
84
Good
PurityRadar safety score

PWSID

MA4182000

State

Massachusetts

City

MIDDLEBOROUGH

Population served

15,350

Primary source

Groundwater

Score history

▼ 16 points — the score moved from 100 to 84 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 84

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 Jun 2025). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

11 ppt

limit 4 ppt

Above EPA limit · 2.8×

PFOS

Perfluorooctanesulfonic acid

4 ppt

limit 4 ppt

Near EPA limit

PFHxS

Perfluorohexanesulfonic acid

3 ppt

limit 10 ppt

Below EPA limit

PFPeA

13 ppt

limit —

No federal limit

PFHxA

10 ppt

limit —

No federal limit

PFBA

5 ppt

limit —

No federal limit

PFBS

4 ppt

limit —

No federal limit

PFHpA

4 ppt

limit —

No federal limit

Violations & enforcement

4

Violations on record

0

Unaddressed

2

Health-based

18

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2025. Official EPA record →

Other · EPA contaminant 7000 began Jul 2012 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2005 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1996 Resolved

Recent enforcement actions

  • State action · SFL Aug 2025
  • State action · SIF Jun 2018
  • State action · SIE Jun 2018
  • State action · SIE Jul 2014
  • State action · SOX Aug 2012
  • State action · SFL Aug 2012
  • State action · SOX Oct 2007
  • State action · SFL Nov 2006

This profile is built from EPA public records for system MA4182000 — 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.