HIGHLAND COLONY
PWS ID: NH1162010 · PLYMOUTH, New Hampshire 03264
Population Served
88
Total Violations
56
Health-Based Violations
40
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 35
- County
- Grafton
- School/Daycare
- No
- MCL Violations
- 32
- Monitoring Violations
- 5
- Treatment Tech Violations
- 8
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 32 | 2005 |
| Consumer Confidence Rule | Other | 4 | 2017 |
| Lead and Copper Rule | TT | 4 | 2022 |
| Groundwater Rule | TT | 4 | 2012 |
| Coliform (TCR) | MR | 3 | 1997 |
| Lead and Copper Rule | MR | 2 | 2022 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.