CANAAN WATER DEPT
PWS ID: NH0351010 · CANAAN, New Hampshire 03741
Population Served
684
Total Violations
261
Health-Based Violations
182
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 203
- County
- Grafton
- School/Daycare
- No
- MCL Violations
- 164
- Monitoring Violations
- 55
- Treatment Tech Violations
- 18
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Total Haloacetic Acids (HAA5) | MCL | 91 | 2010 |
| TTHM | MCL | 73 | 2022 |
| Public Notice | Other | 12 | 2023 |
| Lead and Copper Rule | MR | 12 | 2022 |
| Total Haloacetic Acids (HAA5) | MR | 12 | 2024 |
| TTHM | MR | 12 | 2024 |
| Coliform (TCR) | MR | 11 | 2010 |
| Surface Water Treatment Rule | TT | 10 | 2001 |
| Lead and Copper Rule | TT | 8 | 2014 |
| Revised Total Coliform Rule | MON | 8 | 2024 |
| Revised Total Coliform Rule | RPT | 8 | 2024 |
| Consumer Confidence Rule | Other | 2 | 2013 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.