MWRA
Massachusetts — Community Water System — PWSID: MA6000000
System Information
| PWSID | MA6000000 |
| System Name | MWRA |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | State |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | Yes |
| First Reported | Mar 1, 1988 |
| Last Reported | Mar 17, 2026 |
Location & Contact
| State | Massachusetts |
| City | CHELSEA |
| ZIP Code | 02150 |
| Address | 2 GRIFFIN WAY |
| Organization | MWRA |
| Phone | 6172426000 |
Population & Service
| Population Served | 2,660,000 |
| Service Connections | 217 |
Drinking Water Violations (6)
This water system has 6 violations recorded in the EPA SDWIS database.
| Begin Date | End Date | Contaminant | Category | Health-Based | Major | Measured | Federal MCL | State MCL | Status | Return to Compliance | Rule |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 2001 | Mar 31, 2001 | MR | No | No | — | 0.004 mg/L | — | Archived | Mar 31, 2001 | — | |
| Jan 1, 2001 | Mar 31, 2001 | MR | No | No | — | 0.003 mg/L | — | Archived | Mar 31, 2001 | — | |
| Jan 1, 1992 | May 5, 2000 | TT | Yes | No | — | — | — | Archived | May 5, 2000 | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — |
About This Water System
Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.