ROCKY HILL W DEPT
PWS ID: NJ1817001 · MONMOUTH JUNCTION, New Jersey 08552
Population Served
687
Total Violations
41
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 287
- County
- Somerset
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 28
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Chlorine | MR | 11 | 2018 |
| TTHM | MR | 4 | 2007 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2007 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 2008 |
| Nitrate | MR | 2 | 2003 |
| Consumer Confidence Rule | Other | 2 | 2011 |
| Combined Radium (-226 and -228) | MR | 2 | 2008 |
| Public Notice | Other | 2 | 2023 |
| Revised Total Coliform Rule | RPT | 2 | 2019 |
| Combined Uranium | MR | 2 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.