WATERTOWN WATER DEPT. (MWRA)
Massachusetts — Community Water System — PWSID: MA3314000
System Information
| PWSID | MA3314000 |
| System Name | WATERTOWN 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 | Mar 17, 2026 |
Location & Contact
| State | Massachusetts |
| City | WATERTOWN |
| ZIP Code | 02472 |
| Address | 124 ORCHARD ST |
| Organization | WATERTOWN WATER DEPT. (MWRA) |
| Phone | 6179726420 |
Population & Service
| Population Served | 35,329 |
| Service Connections | 7,662 |
Drinking Water Violations (19)
This water system has 19 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 |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Aug 1, 2021 | Aug 31, 2021 | MON | No | No | — | — | — | Archived | Aug 31, 2021 | — | |
| Jan 1, 1996 | — | TT | Yes | No | — | TT | — | Resolved | Jun 10, 1998 | — | |
| Jan 1, 1996 | — | TT | Yes | No | — | TT | — | Resolved | Jun 10, 1998 | — | |
| Jan 1, 1996 | — | TT | Yes | No | — | TT | — | Resolved | Jun 10, 1998 | — | |
| Jan 1, 1996 | — | TT | Yes | No | — | TT | — | Resolved | Jun 10, 1998 | — | |
| Apr 1, 1995 | Jun 30, 1995 | MR | No | Yes | — | 7 MFL | — | Archived | Jun 30, 1995 | — | |
| Jan 1, 1994 | — | TT | Yes | No | — | TT | — | Resolved | Mar 21, 1995 | — | |
| Jan 1, 1994 | — | TT | Yes | No | — | TT | — | Resolved | Mar 21, 1995 | — | |
| Jan 1, 1993 | — | TT | Yes | No | — | TT | — | Resolved | Mar 21, 1995 | — | |
| Jan 1, 1993 | — | TT | Yes | No | — | TT | — | Resolved | Mar 21, 1995 | — | |
| Jan 1, 1992 | May 5, 2000 | TT | Yes | No | — | — | — | Archived | May 5, 2000 | — | |
| Jan 1, 1992 | — | TT | Yes | No | — | TT | — | Resolved | Mar 21, 1995 | — | |
| Jan 1, 1992 | — | TT | Yes | No | — | TT | — | Resolved | Mar 21, 1995 | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | No | No | — | — | — | — | — | — | |
| — | — | — | 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.