DELAWARE MUNICIPAL WATER SUPPLY
PWS ID: IA2813019 · OELWEIN, Iowa 50662
Population Served
142
Total Violations
74
Health-Based Violations
0
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 42
- County
- Delaware
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 52
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Gross Alpha, Excl. Radon and U | MR | 4 | 2009 |
| Barium | MR | 4 | 1999 |
| Mercury | MR | 4 | 1999 |
| Antimony, Total | MR | 4 | 1999 |
| Thallium, Total | MR | 4 | 1999 |
| Selenium | MR | 4 | 1999 |
| Revised Total Coliform Rule | MON | 4 | 2018 |
| Cadmium | MR | 4 | 1999 |
| cis-1,2-Dichloroethylene | MR | 4 | 2008 |
| Arsenic | MR | 4 | 1999 |
| Chromium | MR | 4 | 1999 |
| Fluoride | MR | 4 | 1999 |
| Coliform (TCR) | MR | 4 | 1995 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.