MARENGO WATER SUPPLY
PWS ID: IA4843033 · MARENGO, Iowa 52301
Population Served
2,435
Total Violations
109
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,020
- County
- Iowa
- School/Daycare
- No
- MCL Violations
- 8
- Monitoring Violations
- 75
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 17 | 1992 |
| Coliform (TCR) | MR | 11 | 2001 |
| Arsenic | MR | 10 | 2000 |
| Coliform (TCR) | MCL | 8 | 2006 |
| Barium | MR | 5 | 1988 |
| TTHM | MR | 4 | 2019 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2019 |
| Consumer Confidence Rule | Other | 4 | 2016 |
| Chromium | MR | 4 | 1988 |
| Fluoride | MR | 4 | 1988 |
| Lead and Copper Rule | MR | 4 | 1991 |
| Mercury | MR | 4 | 1988 |
| Cadmium | MR | 4 | 1988 |
| Selenium | MR | 4 | 1988 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.