ROCK RIMMON COOPERATIVE
PWS ID: NH0583050 · EAST HAMPSTEAD, New Hampshire 03826
Population Served
200
Total Violations
178
Health-Based Violations
92
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 121
- County
- Rockingham
- School/Daycare
- No
- MCL Violations
- 82
- Monitoring Violations
- 73
- Treatment Tech Violations
- 10
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Combined Radium (-226 and -228) | MCL | 42 | 2017 |
| Arsenic | MCL | 32 | 2015 |
| Coliform (TCR) | MR | 11 | 2010 |
| Groundwater Rule | TT | 10 | 2021 |
| Public Notice | Other | 6 | 2017 |
| Gross Alpha, Excl. Radon and U | MCL | 4 | 2003 |
| Coliform (TCR) | MCL | 4 | 2012 |
| Revised Total Coliform Rule | RPT | 4 | 2016 |
| Gross Alpha, Excl. Radon and U | MR | 4 | 2017 |
| Combined Uranium | MR | 4 | 2017 |
| Chlorine | MR | 4 | 2017 |
| Arsenic | MR | 4 | 2010 |
| Revised Total Coliform Rule | MON | 4 | 2016 |
| Consumer Confidence Rule | Other | 3 | 2016 |
| cis-1,2-Dichloroethylene | MR | 2 | 2017 |
| DICHLOROMETHANE | MR | 2 | 2017 |
| o-Dichlorobenzene | MR | 2 | 2017 |
| Vinyl chloride | MR | 2 | 2017 |
| trans-1,2-Dichloroethylene | MR | 2 | 2017 |
| Carbon tetrachloride | MR | 2 | 2017 |
| 1,2-Dichloropropane | MR | 2 | 2017 |
| Trichloroethylene | MR | 2 | 2017 |
| CHLOROBENZENE | MR | 2 | 2017 |
| Toluene | MR | 2 | 2017 |
| Ethylbenzene | MR | 2 | 2017 |
| Styrene | MR | 2 | 2017 |
| 1,1-Dichloroethylene | MR | 2 | 2017 |
| 1,1,1-Trichloroethane | MR | 2 | 2017 |
| 1,1,2-Trichloroethane | MR | 2 | 2017 |
| p-Dichlorobenzene | MR | 2 | 2017 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.