GILSUM ELEMENTARY SCH
PWS ID: NH0905010 · SWANZEY, New Hampshire 03446
Population Served
62
Total Violations
257
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Local
- Connections
- 1
- County
- Cheshire
- School/Daycare
- Yes
- MCL Violations
- 0
- Monitoring Violations
- 224
- Treatment Tech Violations
- 2
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Public Notice | Other | 31 | 2006 |
| Nitrate | MR | 8 | 2004 |
| cis-1,2-Dichloroethylene | MR | 8 | 2005 |
| o-Dichlorobenzene | MR | 8 | 2005 |
| Vinyl chloride | MR | 8 | 2005 |
| 1,1-Dichloroethylene | MR | 8 | 2005 |
| trans-1,2-Dichloroethylene | MR | 8 | 2005 |
| 1,1,1-Trichloroethane | MR | 8 | 2005 |
| 1,2-Dichloropropane | MR | 8 | 2005 |
| Trichloroethylene | MR | 8 | 2005 |
| 1,1,2-Trichloroethane | MR | 8 | 2005 |
| Tetrachloroethylene | MR | 8 | 2005 |
| Benzene | MR | 8 | 2005 |
| Toluene | MR | 8 | 2005 |
| Ethylbenzene | MR | 8 | 2005 |
| Styrene | MR | 8 | 2005 |
| 1,2,4-Trichlorobenzene | MR | 8 | 2005 |
| DICHLOROMETHANE | MR | 8 | 2005 |
| p-Dichlorobenzene | MR | 8 | 2005 |
| 1,2-Dichloroethane | MR | 8 | 2005 |
| Carbon tetrachloride | MR | 8 | 2005 |
| CHLOROBENZENE | MR | 8 | 2005 |
| Xylenes, Total | MR | 8 | 2005 |
| Nitrite | MR | 4 | 2004 |
| Arsenic | MR | 4 | 2003 |
| Cadmium | MR | 4 | 2003 |
| CYANIDE | MR | 4 | 2003 |
| Selenium | MR | 4 | 2003 |
| Antimony, Total | MR | 4 | 2003 |
| Beryllium, Total | MR | 4 | 2003 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.