ROCK VALLEY RURAL WATER DISTRICT
PWS ID: IA8482701 · ROCK VALLEY, Iowa 51247
Population Served
2,230
Total Violations
64
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Private
- Connections
- 892
- County
- Sioux
- School/Daycare
- No
- MCL Violations
- 6
- Monitoring Violations
- 45
- Treatment Tech Violations
- 3
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Ethylbenzene | MR | 15 | 1996 |
| Xylenes, Total | MR | 15 | 1996 |
| Coliform (TCR) | MCL | 6 | 1993 |
| Nitrate | MR | 5 | 1987 |
| Coliform (TCR) | MR | 4 | 2003 |
| Groundwater Rule | TT | 3 | 2016 |
| Total Haloacetic Acids (HAA5) | MR | 3 | 2005 |
| TTHM | MR | 3 | 2005 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.