COLWELL, CITY OF
PWS ID: IA3409066 · ALTA VISTA, Iowa 50603
Population Served
55
Total Violations
69
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 38
- County
- Floyd
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 47
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 11 | 1997 |
| Nitrate | MR | 9 | 1994 |
| Cadmium | MR | 4 | 1985 |
| Nitrite | MR | 3 | 1997 |
| 1,2,4-Trichlorobenzene | MR | 3 | 1995 |
| LASSO | MR | 3 | 1997 |
| Antimony, Total | MR | 3 | 1992 |
| Gross Alpha, Excl. Radon and U | MR | 3 | 1992 |
| Consumer Confidence Rule | Other | 3 | 1999 |
| Lead and Copper Rule | MR | 2 | 1988 |
| Arsenic | MR | 1 | 1985 |
| Fluoride | MR | 1 | 1985 |
| Mercury | MR | 1 | 1985 |
| Barium | MR | 1 | 1985 |
| Selenium | MR | 1 | 1985 |
| Chromium | MR | 1 | 1985 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.