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Water system · PWSID MA2187000

MILLIS WATER DEPT

MILLIS, MA · ~9,002 people served

Check your exact address → MILLIS overview
48
Fair
PurityRadar safety score

PWSID

MA2187000

State

Massachusetts

City

MILLIS

Population served

9,002

Primary source

Groundwater

Score history

▼ 52 points — the score moved from 100 to 48 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 48

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

PFOS

Perfluorooctanesulfonic acid

7.2 ppt

limit 4 ppt

Above EPA limit · 1.8×

PFOA

Perfluorooctanoic acid

6.5 ppt

limit 4 ppt

Above EPA limit · 1.6×

PFBS

8.4 ppt

limit —

No federal limit

PFHxA

3 ppt

limit —

No federal limit

PFPeA

3 ppt

limit —

No federal limit

Violations & enforcement

28

Violations on record

0

Unaddressed

2

Health-based

18

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2018. Official EPA record →

Monitoring & reporting · Nitrate began Jul 2017 Resolved
Monitoring & reporting · EPA contaminant 0700 began Mar 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2012 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2011 Resolved
Monitoring & reporting · EPA contaminant 0999 began Apr 2011 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jul 2010 Resolved
Monitoring & reporting · EPA contaminant 2976 began Jul 2001 Resolved
Monitoring & reporting · EPA contaminant 2969 began Jul 2001 Resolved
Monitoring & reporting · EPA contaminant 2955 began Jul 2001 Resolved
Monitoring & reporting · EPA contaminant 2981 began Jul 2001 Resolved
Monitoring & reporting · EPA contaminant 2982 began Jul 2001 Resolved
Monitoring & reporting · EPA contaminant 2980 began Jul 2001 Resolved

Recent enforcement actions

  • State action · SOX Jul 2018
  • State action · SFL Jul 2018
  • State action · SOX Jan 2017
  • State action · SFL Jan 2017
  • State action · SIE Jul 2013
  • State action · SFL Jun 2012
  • State action · SOX Jun 2012
  • State action · SOX Dec 2011

This profile is built from EPA public records for system MA2187000 — 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.