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Water system · PWSID MA3180000

MERRIMAC WATER DEPARTMENT

MERRIMAC, MA · ~7,193 people served

Check your exact address → MERRIMAC overview
82
Good
PurityRadar safety score

PWSID

MA3180000

State

Massachusetts

City

MERRIMAC

Population served

7,193

Primary source

Groundwater

Score history

▼ 18 points — the score moved from 100 to 82 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 82

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

PFOA

Perfluorooctanoic acid

5.6 ppt

limit 4 ppt

Above EPA limit · 1.4×

Violations & enforcement

58

Violations on record

0

Unaddressed

3

Health-based

26

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jan 2022. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jun 2021 Addressed
Monitoring & reporting · Lead & Copper Rule began Jun 2015 Resolved
Monitoring & reporting · EPA contaminant 2326 began Jan 2013 Resolved
Monitoring & reporting · EPA contaminant 2110 began Jan 2013 Resolved
Monitoring & reporting · EPA contaminant 2015 began Jan 2013 Resolved
Monitoring & reporting · EPA contaminant 2010 began Jan 2013 Resolved
Monitoring & reporting · EPA contaminant 2931 began Jan 2013 Resolved
Monitoring & reporting · EPA contaminant 2383 began Jan 2013 Resolved
Monitoring & reporting · EPA contaminant 2306 began Jan 2013 Resolved
Monitoring & reporting · EPA contaminant 2031 began Jan 2013 Resolved
Monitoring & reporting · EPA contaminant 2035 began Jan 2013 Resolved
Monitoring & reporting · EPA contaminant 2020 began Jan 2013 Resolved

Recent enforcement actions

  • State action · SFL Jan 2022
  • State action · SOX Jul 2016
  • State action · SFL Jun 2016
  • State action · SOX Jun 2013
  • State action · SFJ May 2013
  • State action · SFJ Oct 2012
  • State action · SOX Aug 2012
  • State action · SFJ Aug 2012

This profile is built from EPA public records for system MA3180000 — 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.