CONNECTICUT RIVER MHP
PWS ID: NH0413020 · WALPOLE, New Hampshire 03608
Population Served
50
Total Violations
248
Health-Based Violations
44
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 18
- County
- Sullivan
- School/Daycare
- No
- MCL Violations
- 26
- Monitoring Violations
- 186
- Treatment Tech Violations
- 18
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 54 | 2000 |
| Coliform (TCR) | MCL | 24 | 2009 |
| Consumer Confidence Rule | Other | 9 | 2014 |
| Lead and Copper Rule | TT | 9 | 2007 |
| Groundwater Rule | TT | 9 | 2014 |
| Chlorine | MR | 8 | 2008 |
| Lead and Copper Rule | MR | 6 | 2006 |
| 1,2,4-Trichlorobenzene | MR | 5 | 1995 |
| DICHLOROMETHANE | MR | 5 | 1995 |
| o-Dichlorobenzene | MR | 5 | 1995 |
| p-Dichlorobenzene | MR | 5 | 1995 |
| 1,1-Dichloroethylene | MR | 5 | 1995 |
| trans-1,2-Dichloroethylene | MR | 5 | 1995 |
| 1,1,1-Trichloroethane | MR | 5 | 1995 |
| Trichloroethylene | MR | 5 | 1995 |
| Benzene | MR | 5 | 1995 |
| Vinyl chloride | MR | 5 | 1995 |
| Styrene | MR | 5 | 1995 |
| Xylenes, Total | MR | 5 | 1995 |
| cis-1,2-Dichloroethylene | MR | 5 | 1995 |
| 1,2-Dichloropropane | MR | 5 | 1995 |
| Carbon tetrachloride | MR | 5 | 1995 |
| Toluene | MR | 5 | 1995 |
| Ethylbenzene | MR | 5 | 1995 |
| Tetrachloroethylene | MR | 5 | 1995 |
| 1,2-Dichloroethane | MR | 5 | 1995 |
| CHLOROBENZENE | MR | 5 | 1995 |
| Nitrate | MR | 5 | 1995 |
| 1,1,2-Trichloroethane | MR | 5 | 1995 |
| TTHM | MR | 4 | 2004 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.