NORTH CHELMSFORD WATER DIST

NORTH CHELMSFORD, MA · ~7,498 people served

Check your exact address → NORTH CHELMSFORD overview

100

Excellent

PurityRadar safety score

PWSID

MA3056002

State

Massachusetts

City

NORTH CHELMSFORD

Population served

7,498

Primary source

Groundwater

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

Latest detections from EPA’s UCMR5 monitoring (through Aug 2024). Levels in parts per trillion (ppt).

Lithium

30,800 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2025. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jan 2025 Addressed

Monitoring & reporting · Nitrate began Apr 2012 Resolved

Monitoring & reporting · Total coliform began Jan 2009 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 2009 Resolved

Monitoring & reporting · Gross alpha began Jan 1992 Resolved

Recent enforcement actions

State action · SFL Dec 2025
State action · SOX Sep 2012
State action · SFJ Aug 2012
State action · SOX Nov 2011
State action · SFL Nov 2011
State action · SFO May 2010
State action · SFL Jun 2009
State action · SOX Feb 2009

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 Jun 2023

0.333 · max 0.631 mg/l as N · 54

Arsenic

1 station · latest Sep 2023

3.15 · max 5.7 ug/l · 12

Copper

1 station · latest Sep 2023

0.8 · max 1.2 ug/l · 12

Lead

1 station · latest Sep 2023

0.332 · max 0.49 ug/l · 12

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 MA3056002 — 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.