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Water system · PWSID MA4020000

BARNSTABLE FIRE DISTRICT

BARNSTABLE, MA · ~5,400 people served

Check your exact address → BARNSTABLE overview
62
Fair
PurityRadar safety score

PWSID

MA4020000

State

Massachusetts

City

BARNSTABLE

Population served

5,400

Primary source

Groundwater

Score history

▼ 38 points — the score moved from 100 to 62 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 62

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 Oct 2023). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

7.1 ppt

limit 4 ppt

Above EPA limit · 1.8×

PFOA

Perfluorooctanoic acid

4.4 ppt

limit 4 ppt

Above EPA limit · 1.1×

PFHxS

Perfluorohexanesulfonic acid

3.6 ppt

limit 10 ppt

Below EPA limit

PFBS

10 ppt

limit —

No federal limit

PFPeA

4 ppt

limit —

No federal limit

PFHxA

3.1 ppt

limit —

No federal limit

Violations & enforcement

10

Violations on record

0

Unaddressed

7

Health-based

14

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 2011. Official EPA record →

Monitoring & reporting · Total coliform began Aug 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began Aug 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2010 Resolved
Other · Total coliform began May 2010 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2006 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1994 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 1993 Resolved

Recent enforcement actions

  • State action · SFL Nov 2011
  • State action · SOX Oct 2011
  • State action · SOX Mar 2011
  • State action · SFL Feb 2011
  • State action · SFL Aug 2010
  • State action · SOX Aug 2010
  • State action · SOX Aug 2007
  • State action · SFL Nov 2006

This profile is built from EPA public records for system MA4020000 — 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.