WINCHESTER WATER DEPT
PWS ID: NH2531010 · WINCHESTER, New Hampshire 03470
Population Served
2,800
Total Violations
13
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,128
- County
- Cheshire
- School/Daycare
- No
- MCL Violations
- 7
- Monitoring Violations
- 4
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 7 | 1996 |
| Chlorine | MR | 4 | 2016 |
| Lead and Copper Rule | TT | 2 | 1994 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.