THOMPSON WATER WORKS
PWS ID: IA9585017 · THOMPSON, Iowa 50478
Population Served
499
Total Violations
127
Health-Based Violations
5
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 312
- County
- Winnebago
- School/Daycare
- No
- MCL Violations
- 5
- Monitoring Violations
- 60
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Arsenic | MR | 13 | 2000 |
| Vinyl chloride | MR | 8 | 2001 |
| Cadmium | MR | 5 | 1986 |
| Nitrate | MR | 5 | 1986 |
| Selenium | MR | 5 | 1986 |
| Coliform (TCR) | MCL | 5 | 2004 |
| Chromium | MR | 5 | 1986 |
| Fluoride | MR | 5 | 1986 |
| Barium | MR | 5 | 1986 |
| Mercury | MR | 5 | 1986 |
| Lead and Copper Rule | MR | 4 | 1989 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.