BOSTON WATER AND SEWER COMMISSION (MWRA)
Massachusetts — Community Water System — PWSID: MA3035000
System Information
| PWSID | MA3035000 |
| System Name | BOSTON WATER AND SEWER COMMISSION (MWRA) |
| System Type | Community Water System |
| Water Source | Surface Water Purchased |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 26, 1979 |
| Last Reported | Mar 17, 2026 |
Location & Contact
| State | Massachusetts |
| City | BOSTON |
| ZIP Code | 02119 |
| Address | 980 HARRISON AVE |
| Organization | BOSTON WATER AND SEWER COMMISSION (MWRA) |
| Phone | 6179897000 |
Population & Service
| Population Served | 675,647 |
| Service Connections | 88,360 |
Drinking Water Violations (8)
This water system has 8 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Nov 1, 2020 | — | TT | Yes | No | — | TT | — | Addressed | — | — | |
| Jul 1, 1996 | Jul 31, 1996 | MCL | Yes | No | — | 5% of samples | — | Archived | Jul 31, 1996 | — | |
| Jun 1, 1996 | Jun 30, 1996 | MCL | Yes | No | — | 5% of samples | — | Archived | Jun 30, 1996 | — | |
| Jan 1, 1992 | May 5, 2000 | TT | Yes | No | — | — | — | Archived | May 5, 2000 | — | |
| Aug 31, 1982 | Sep 30, 1982 | Other | No | No | — | — | — | Archived | Sep 30, 1982 | — | |
| — | — | — | 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.