ARLINGTON WATER DEPT. (MWRA)

ARLINGTON, MA · ~46,308 people served

Check your exact address → ARLINGTON overview

100

Excellent

PurityRadar safety score

PWSID

MA3010000

State

Massachusetts

City

ARLINGTON

Population served

46,308

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 Apr 2024. Official EPA record →

Monitoring & reporting · EPA contaminant 1094 began Jan 2020 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2015 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 · SOX Apr 2024
State action · SFL Apr 2023
State action · SFO Apr 2021
State action · SOX Jul 2016
State action · SFJ Jun 2016
State action · SFL Aug 2009
State action · SFL May 2008
State action · SOX Jul 2007

This profile is built from EPA public records for system MA3010000 — 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.