Boston, Massachusetts Water Quality Report
Comprehensive analysis of tap water safety based on EPA data
Last updated: January 2026
Is Boston's Water Safe to Drink?
Some Concerns. Boston's tap water has some contaminants worth monitoring. Consider a water filter for extra protection. Score: 76/100.
EPA Limit Exceeded: 1 contaminant(s) were found above EPA maximum limits: Lead.
Contaminants Found in Boston's Water
1 contaminants tested • Data from EPA SDWIS database
| Contaminant | Level Detected | EPA Limit | % of Limit | Status |
|---|---|---|---|---|
Lead | 0.025 mg/L | 0.015 mg/L | 168.0% | Exceeds Limit |
Compliance Violations
Past EPA violations recorded for Boston's water system
other
Contaminant 5000 - 11/1/2020
About Boston's Water System
BOSTON WATER AND SEWER COMMISSION (MWRA)
- PWS ID:
- MA3035000
- Population Served:
- 675,647
- Water Source:
- surface
B76/100
Boston Water Quality Score
Based on EPA contaminant data and compliance records
66
Contaminants
85
Compliance
85
Infrastructure
Areas of Concern
- Lead exceeds EPA limit
- 1 unresolved violation(s)
Positive Findings
- Above average water quality
- No violations in the past 3 years
- No health-based (MCL) violations
Protect Your Family's Water
Boston's water contains Lead at 168% of the EPA limit. A quality water filter can reduce this contaminant.
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Other Cities in Massachusetts
Compare water quality with nearby cities.
View all Massachusetts cities →Frequently Asked Questions
- Where does Boston's water come from?
- Boston primarily uses surface water sources.
- How often is Boston's water tested?
- Water utilities are required to test for contaminants regularly and report results to the EPA.
- Should I use a water filter in Boston?
- With 1 contaminants at elevated levels, a water filter can provide extra protection.