MARATHON LIGHT & WATER DEPARTMENT
PWS ID: IA1150030 · MARATHON, Iowa 50565
Population Served
230
Total Violations
68
Health-Based Violations
39
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 120
- County
- Buena Vista
- School/Daycare
- No
- MCL Violations
- 39
- Monitoring Violations
- 14
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MCL | 20 | 2007 |
| Coliform (TCR) | MCL | 19 | 1992 |
| Coliform (TCR) | MR | 3 | 1993 |
| Nitrate | MR | 3 | 1996 |
| Arsenic | MR | 2 | 1985 |
| Barium | MR | 1 | 1985 |
| Cadmium | MR | 1 | 1985 |
| Chromium | MR | 1 | 1985 |
| Lead and Copper Rule | MR | 1 | 1988 |
| Mercury | MR | 1 | 1985 |
| Selenium | MR | 1 | 1985 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.