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Water system · PWSID MA4350000

WRENTHAM WATER DIVISION

WRENTHAM, MA · ~12,190 people served

Check your exact address → WRENTHAM overview
80
Good
PurityRadar safety score

PWSID

MA4350000

State

Massachusetts

City

WRENTHAM

Population served

12,190

Primary source

Groundwater

Score history

▼ 20 points — the score moved from 100 to 80 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 80

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 Feb 2024). Levels in parts per trillion (ppt).

PFOA

Perfluorooctanoic acid

5.7 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFOS

Perfluorooctanesulfonic acid

4.4 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFBS

5.1 ppt

limit —

No federal limit

PFHxA

3.2 ppt

limit —

No federal limit

PFPeA

3.1 ppt

limit —

No federal limit

Violations & enforcement

33

Violations on record

0

Unaddressed

23

Health-based

47

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2019. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2015 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2015 Resolved
Other · EPA contaminant 7000 began Jul 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2014 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2012 Resolved
Monitoring & reporting · Total coliform began Jul 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Feb 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2009 Resolved

Recent enforcement actions

  • State action · SOX Jul 2019
  • State action · SFL Feb 2019
  • State action · SOX Dec 2016
  • State action · SFJ Apr 2016
  • State action · SFJ Aug 2015
  • State action · SOX Jul 2015
  • State action · SOX Feb 2015
  • State action · SFJ Feb 2015

This profile is built from EPA public records for system MA4350000 — 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.