SOUTHBOROUGH DPW WATER DIVISION (MWRA)

SOUTHBOROUGH, MA · ~10,514 people served

Check your exact address → SOUTHBOROUGH overview

100

Excellent

PurityRadar safety score

PWSID

MA2277000

State

Massachusetts

City

SOUTHBOROUGH

Population served

10,514

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 Jul 2025. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Aug 2006 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 2005 Resolved

Max contaminant level (MCL) · Total coliform health-based began Oct 2004 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 1998 Resolved

Recent enforcement actions

State action · SFJ Jul 2025
State action · SFL Apr 2010
State action · SOX Oct 2006
State action · SFL Oct 2006
State action · SFL Aug 2005
State action · SOX Aug 2005
State action · SOX Nov 2004
State action · SFL Nov 2004

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

1 station · latest Jul 2023

0.054 · max 0.054 mg/L · 1

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system MA2277000 — 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.