WINCHESTER WATER DEPT
Massachusetts - Community Water System - PWSID: MA3344000
System Information
| PWSID | MA3344000 |
| System Name | WINCHESTER WATER DEPT |
| System Type | Community Water System |
| Water Source | Surface Water |
| Activity Status | Active |
| Owner Type | Local |
| EPA Region | 01 |
| Serves School | No |
| Wholesaler | No |
| First Reported | Feb 26, 1979 |
| Last Reported | Jun 22, 2026 |
Location & Contact
| State | Massachusetts |
| City | WINCHESTER |
| ZIP Code | 01890 |
| Address | 15 LAKE ST |
| Organization | WINCHESTER WATER DEPT |
| Phone | 7817217100 |
Population & Service
| Population Served | 22,970 |
| Service Connections | 7,142 |
Drinking Water Violations (74)
This water system has 74 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, 2026 | Mar 31, 2026 | MR | No | No | - | 0.006 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | 0.002 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | 4.0 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | 0.010 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | 2 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | 0.05 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | - | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | 0.004 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | 0.1 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | 0.002 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | 0.2 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2026 | Mar 31, 2026 | MR | No | No | - | 0.005 mg/L | - | Archived | Mar 31, 2026 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.002 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.1 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.2 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.2 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.1 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.010 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.010 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 2 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 2 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | - | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 10 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 10 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 4.0 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 4.0 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.002 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.002 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.05 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.05 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.005 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.006 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.006 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.005 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.004 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.004 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | 0.002 mg/L | - | Resolved | Mar 31, 2014 | - | |
| Jan 1, 2014 | Mar 31, 2014 | MR | No | No | - | - | - | Resolved | Mar 31, 2014 | - | |
| Oct 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Aug 16, 2006 | - | |
| Oct 1, 2005 | - | MR | No | No | - | TT | - | Resolved | Aug 16, 2006 | - | |
| Jan 1, 2001 | - | MR | No | No | - | TT | - | Resolved | Jul 12, 2002 | - | |
| Jan 1, 2001 | - | MR | No | No | - | TT | - | Resolved | Jul 12, 2002 | - | |
| Jul 1, 1997 | Sep 30, 1997 | MR | No | Yes | - | - | - | Archived | Sep 30, 1997 | - | |
| Jul 1, 1997 | Sep 30, 1997 | MR | No | Yes | - | - | - | Archived | Sep 30, 1997 | - | |
| Jul 1, 1997 | Sep 30, 1997 | MR | No | Yes | - | 4 mrem/yr | - | Archived | Sep 30, 1997 | - | |
| Jul 1, 1997 | Sep 30, 1997 | MR | No | Yes | - | - | - | Archived | Sep 30, 1997 | - | |
| Jul 1, 1997 | Sep 30, 1997 | MR | No | Yes | - | - | - | Archived | Sep 30, 1997 | - | |
| Jun 1, 1997 | Jun 30, 1997 | MCL | Yes | No | - | 5% of samples | - | Archived | Jun 30, 1997 | - | |
| Jan 1, 1997 | Mar 31, 1997 | MR | No | Yes | - | 10 mg/L | - | Archived | Mar 31, 1997 | - | |
| Apr 1, 1996 | Apr 30, 1996 | MCL | Yes | No | - | 5% of samples | - | Archived | Apr 30, 1996 | - |
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.