SOMERVILLE WATER DEPT. (MWRA) Water Quality Report
Population
81,045
people served
Water Source
🌊 Surface
rivers, lakes, reservoirs
National Rank
Top 43%
of 49,184 US systems
5-Year Record
✅ Clean
no violations
A
Safe
Safety Grade
0 violations in the past 5 years, including 6 health-based
System Details
- PWSID
- MA3274000
- Population Served
- 81,045
- Water Source
- Surface Water
- Owner
- Local Government
- State
- Massachusetts
- EPA Region
- 1
Contaminants of Concern
| Contaminant | Status | Violations |
|---|---|---|
| Contaminant 5000 | ✕ Health-Based | 7 |
Violation History
2020
1
2008
1
2000
1
1998
1
1994
1
1993
1
1992
1
Total violations on record: 7
Service Area
Cities Served
ZIP Codes Served
How does this compare?
This systemNational average
Grade A
Avg: B-C
7violations total
25% of national average
National avg: ~28 per system
🏙️ This is a large system — serving 12× more people than the national average.