WALTERS BASIN
PWS ID: NH1168150 · HOLDERNESS, New Hampshire 03245
Population Served
450
Total Violations
44
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 5
- County
- Grafton
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 34
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 22 | 2013 |
| Public Notice | Other | 6 | 2007 |
| E. COLI | MR | 4 | 2021 |
| Coliform (TCR) | MCL | 4 | 2011 |
| Nitrite | MR | 4 | 2004 |
| Nitrate | MR | 4 | 2007 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.