WENHAM WATER DEPT.

WENHAM, MA · ~3,942 people served

Check your exact address → WENHAM overview

Fair

PurityRadar safety score

PWSID

MA3320000

State

Massachusetts

City

WENHAM

Population served

3,942

Primary source

Groundwater

Score history

▼ 33 points — the score moved from 100 to 67 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 67

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

PFOS

Perfluorooctanesulfonic acid

5.6 ppt

limit 4 ppt

Above EPA limit · 1.4×

PFOA

Perfluorooctanoic acid

5.2 ppt

limit 4 ppt

Above EPA limit · 1.3×

PFHxA

5.2 ppt

limit —

No federal limit

PFPeA

4.9 ppt

limit —

No federal limit

PFBS

3.4 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2016. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jul 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began Oct 2010 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 2010 Resolved

Treatment technique · Lead & Copper Rule health-based began Jan 1994 Resolved

Recent enforcement actions

State action · SOX Jul 2016
State action · SFJ Jun 2016
State action · SOX Feb 2011
State action · SFL Nov 2010
State action · SFL Oct 2010
State action · SFL Apr 2010
State action · SFL Feb 2010
State action · SFL Jul 2005

This profile is built from EPA public records for system MA3320000 — 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.