CITY OF CAMBRIDGE WATER

CAMBRIDGE, MD · ~15,000 people served

Check your exact address → CAMBRIDGE overview

100

Excellent

PurityRadar safety score

PWSID

MD0090002

State

Maryland

City

CAMBRIDGE

Population served

15,000

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 Feb 2025). Levels in parts per trillion (ppt).

Lithium

9,770 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement May 2014. Official EPA record →

Other · EPA contaminant 7000 began Jul 2013 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1993 Resolved

Recent enforcement actions

State action · SOX May 2014
State action · SIA Mar 2014
State action · SOX Jul 1993
State action · SIA Jul 1993
State action · SIA Jul 1992
State action · SIA Sep 1987

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

Fluoride

1 station · latest Aug 2022

0.6 · max 0.6 mg/l · 1

Manganese

1 station · latest Aug 2022

12.7 · max 12.7 ug/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 MD0090002 — 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.