MWRA
Community Water System · Massachusetts · CHELSEA
PWSID: MA6000000
WholesalerCompliant
Population Served
2.7M
Service Connections
217
Total Violations
6
Health-Based Violations
1
Lead & Copper Data
Lead Level
Elevated5.90 ppb
Action Level: 15 ppb (EPA) · Sampled: 2025-12-31
015 ppb action level
Copper Level
No copper sampling data available
System Details
- Water Source
- Surface Water
- System Type
- Community Water System
- City
- CHELSEA
- ZIP Code
- 02150
- Counties Served
- Suffolk
- Cities Served
- BOSTON
- Open Violations
- 0
- State
- Massachusetts
Violation Summary
6
Total Violations
1
Health-Based
0
Open Now
Most recent violation: 2001-01-01
Explore Massachusetts Water Quality
See all water systems, lead data, and violation trends for Massachusetts.
Data source: EPA ECHO SDWIS Bulk Download (Jan 2026). PWSID: MA6000000.SafeWater Home