CHELSEA WATER DEPT. (MWRA)

CHELSEA, MA · ~38,319 people served

Check your exact address → CHELSEA overview

100

Excellent

PurityRadar safety score

PWSID

MA3057000

State

Massachusetts

City

CHELSEA

Population served

38,319

Primary source

SWP

Score history

No change since tracking began Jun 18, 2026.

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

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2024. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jul 2016 Resolved

Treatment technique · Lead & Copper Rule health-based began Jan 2010 Resolved

Treatment technique · Lead & Copper Rule health-based began Jan 2007 Resolved

Treatment technique · Lead & Copper Rule health-based began Jan 1999 Resolved

Treatment technique · Lead & Copper Rule health-based began Jan 1997 Resolved

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

Treatment technique · Lead & Copper Rule health-based began Jan 1993 Resolved

Treatment technique · Lead & Copper Rule health-based began Jan 1992 Resolved

Recent enforcement actions

State action · SFJ May 2024
State action · SOX Jun 2016
State action · SFJ Jun 2016
State action · SOX Apr 2011
State action · SFL Feb 2011
State action · SOX Jun 2008
State action · SFL Apr 2008
State action · SOX Feb 2000

This profile is built from EPA public records for system MA3057000 — 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.