DIAGONAL WATER DEPARTMENT
PWS ID: IA8018040 · DIAGONAL, Iowa 50845
Population Served
338
Total Violations
75
Health-Based Violations
5
Water Source
Surface Water
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 133
- County
- Ringgold
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 54
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Revised Total Coliform Rule | MON | 17 | 2024 |
| Nitrite | MR | 10 | 2024 |
| Public Notice | Other | 10 | 2025 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2012 |
| Coliform (TCR) | MR | 8 | 2015 |
| Lead and Copper Rule | MR | 7 | 2019 |
| Coliform (TCR) | MCL | 5 | 2010 |
| TTHM | MR | 4 | 2012 |
| Consumer Confidence Rule | Other | 4 | 2008 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.