CHELSEA WATER DEPT. (MWRA)
Massachusetts — Community Water System — PWSID: MA3057000
System Information
| PWSID | MA3057000 |
| System Name | CHELSEA WATER DEPT. (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 | Dec 17, 2025 |
Location & Contact
| State | Massachusetts |
| City | CHELSEA |
| ZIP Code | 02150 |
| Address | 500 BROADWAY SUITE 310 |
| Organization | CHELSEA WATER DEPT.(MWRA) |
| Phone | 6174664200 |
Population & Service
| Population Served | 38,319 |
| Service Connections | 5,100 |
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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Jan 1, 1999 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Feb 28, 2000 | Lead and Copper Rule |
| Jan 1, 1999 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Feb 28, 2000 | Lead and Copper Rule |
| Jan 1, 1997 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Mar 18, 1998 | Lead and Copper Rule |
| May 1, 1995 | May 31, 1995 | Coliform (TCR) | MCL | Yes | No | — | 5% of samples | — | Archived | May 31, 1995 | Total Coliform Rule |
| Jan 1, 1993 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Mar 21, 1995 | Lead and Copper Rule |
| Jan 1, 1993 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Mar 21, 1995 | Lead and Copper Rule |
| Jan 1, 1992 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Mar 21, 1995 | Lead and Copper Rule |
| Jan 1, 1992 | — | Lead and Copper Rule | TT | Yes | No | — | TT | — | Resolved | Mar 21, 1995 | Lead and Copper Rule |
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.