CASTALIA WATER WORKS
PWS ID: IA9620082 · OSSIAN, Iowa 52161
Population Served
145
Total Violations
56
Health-Based Violations
24
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 86
- County
- Winneshiek
- School/Daycare
- No
- MCL Violations
- 24
- Monitoring Violations
- 7
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 24 | 1994 |
| Gross Alpha, Excl. Radon and U | MR | 7 | 1987 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.