CORWITH WATER SUPPLY
PWS ID: IA4109077 · CORWITH, Iowa 50430-5007
Population Served
266
Total Violations
60
Health-Based Violations
12
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 159
- County
- Hancock
- School/Daycare
- No
- MCL Violations
- 12
- Monitoring Violations
- 25
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 11 | 1993 |
| Gross Alpha, Excl. Radon and U | MR | 6 | 1993 |
| Coliform (TCR) | MR | 5 | 1993 |
| Arsenic | MR | 4 | 2012 |
| Nitrate | MR | 4 | 2016 |
| Antimony, Total | MR | 3 | 1994 |
| Nitrite | MR | 3 | 1997 |
| Consumer Confidence Rule | Other | 2 | 2018 |
| Groundwater Rule | Other | 2 | 2018 |
| Di(2-ethylhexyl) phthalate | MCL | 1 | 1996 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.