ST JOHN ON THE MOUNTAIN
PWS ID: NJ1802313 · BERNARDSVILLE, New Jersey 07924
Population Served
180
Total Violations
31
Health-Based Violations
3
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Somerset
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 27
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 7 | 2025 |
| Lead and Copper Rule | TT | 3 | 2025 |
| Carbon tetrachloride | MR | 2 | 1990 |
| Trichloroethylene | MR | 2 | 1990 |
| Benzene | MR | 2 | 1990 |
| 1,2-DIBROMO-3-CHLOROPROPANE | MR | 2 | 2020 |
| p-Dichlorobenzene | MR | 2 | 1990 |
| Vinyl chloride | MR | 2 | 1990 |
| 1,1-Dichloroethylene | MR | 2 | 1990 |
| 1,1,1-Trichloroethane | MR | 2 | 1990 |
| 1,2-Dichloroethane | MR | 2 | 1990 |
| ETHYLENE DIBROMIDE | MR | 2 | 2020 |
| Public Notice | Other | 1 | 2021 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.