GRISWOLD WATER SUPPLY
PWS ID: IA1528010 · GRISWOLD, Iowa 51535
Population Served
1,008
Total Violations
61
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 543
- County
- Cass
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 41
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 23 | 1992 |
| Total Haloacetic Acids (HAA5) | MR | 10 | 2025 |
| Nitrate | MCL | 8 | 1998 |
| TTHM | MR | 5 | 2025 |
| Coliform (TCR) | MR | 3 | 1998 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.