HAWARDEN WATER SUPPLY
PWS ID: IA8434040 · HAWARDEN, Iowa 51023
Population Served
2,700
Total Violations
173
Health-Based Violations
36
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 1,058
- County
- Sioux
- School/Daycare
- No
- MCL Violations
- 36
- Monitoring Violations
- 85
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 36 | 1999 |
| Coliform (TCR) | MR | 10 | 2006 |
| Cadmium | MR | 6 | 1988 |
| Lead and Copper Rule | MR | 6 | 1991 |
| Mercury | MR | 6 | 1988 |
| Arsenic | MR | 6 | 1988 |
| Chromium | MR | 6 | 1988 |
| Fluoride | MR | 6 | 1988 |
| Selenium | MR | 6 | 1988 |
| Nitrate | MR | 5 | 1996 |
| 1,2,4-Trichlorobenzene | MR | 5 | 1995 |
| BHC-GAMMA | MR | 5 | 1995 |
| Total Haloacetic Acids (HAA5) | MR | 4 | 2018 |
| TTHM | MR | 4 | 2018 |
| Antimony, Total | MR | 4 | 1992 |
| Barium | MR | 3 | 1988 |
| Chlorine | MR | 3 | 2006 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.