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Water system · PWSID MA3035000

BOSTON WATER AND SEWER COMMISSION (MWRA)

BOSTON, MA · ~675,647 people served

Check your exact address → BOSTON overview
100
Excellent
PurityRadar safety score

PWSID

MA3035000

State

Massachusetts

City

BOSTON

Population served

675,647

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

1

Violations on record

0

Unaddressed

1

Health-based

4

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Oct 2021. Official EPA record →

Treatment technique · Lead & Copper Rule health-based began Nov 2020 Addressed

Recent enforcement actions

  • State action · SFL Oct 2021
  • State action · SFL Sep 1996
  • State action · SFJ Sep 1989
  • State action · SIA Sep 1982

This profile is built from EPA public records for system MA3035000 — 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.