Skip to main content
WaterSafety

Cambridge Water Department

Cambridge, Massachusetts · PWSID: MA3049000

A
Water Safety Score
91/100
118,214
Population Served
Surface water
Source Type
0
Health Violations
0
Contaminant Exceedances

Detected Contaminants

ContaminantDetected LevelMCL (Limit)StatusSample Date
Total Coliform (TCR)2.5 % positive5 % positiveWithin LimitJul 1, 2017
Atrazine1.5 ppb3 ppbWithin LimitApr 1, 2019
Benzene2.5 ppb5 ppbWithin LimitApr 1, 2019

Violation History

Contaminant 2067
Health-BasedApr 1, 2019 - Jun 30, 2019
Open
Enforcement: 29
Contaminant 2067
Health-BasedApr 1, 2019 - Jun 30, 2019
Open
Enforcement: 29
Contaminant 2065
Health-BasedApr 1, 2019 - Jun 30, 2019
Open
Enforcement: 29
Contaminant 2065
Health-BasedApr 1, 2019 - Jun 30, 2019
Open
Enforcement: 29
Contaminant 2326
Health-BasedApr 1, 2019 - Jun 30, 2019
Open
Enforcement: 29
Contaminant 2326
Health-BasedApr 1, 2019 - Jun 30, 2019
Open
Enforcement: 29
Contaminant 2020
Health-BasedApr 1, 2019 - Jun 30, 2019
Open
Enforcement: 29
Contaminant 2020
Health-BasedApr 1, 2019 - Jun 30, 2019
Open
Enforcement: 29
Contaminant 2110
Health-BasedApr 1, 2019 - Jun 30, 2019
Open
Enforcement: 29
Contaminant 2110
Health-BasedApr 1, 2019 - Jun 30, 2019
Open
Enforcement: 29

Frequently Asked Questions

Cambridge Water Department has a Water Safety Score of A (91/100). The system serves 118,214 people and has 0 health violations on record. Check the contaminant table above for specific detected substances.

Cambridge Water Department has 0 contaminant exceedances above EPA health guidelines. See the full contaminant detection table above for all tested substances and their levels relative to legal limits and health guidelines.

The Water Safety Score (0-100, grades A through F) is based on contaminant levels relative to legal limits, health guideline exceedances, violation history, and enforcement actions. Higher scores indicate fewer concerns.

If your water system has violations, request the Consumer Confidence Report from your utility, consider getting an independent water test from a certified lab, and look into certified water filters for specific contaminants of concern. For lead, run cold water for 30 seconds before drinking.

Sources: EPA SDWIS, EWG Tap Water Database
Last updated:

Water quality data sourced from EPA's Safe Drinking Water Information System (SDWIS). Safety scores are calculated based on contaminant levels, violations, and enforcement history. This is not a substitute for your utility's official Consumer Confidence Report.