HOLY CROSS WATER SUPPLY
PWS ID: IA3146055 · HOLY CROSS, Iowa 52053
Population Served
356
Total Violations
66
Health-Based Violations
13
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 173
- County
- Dubuque
- School/Daycare
- No
- MCL Violations
- 13
- Monitoring Violations
- 49
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 18 | 2007 |
| Coliform (TCR) | MCL | 13 | 2003 |
| Gross Alpha, Excl. Radon and U | MR | 8 | 1990 |
| Revised Total Coliform Rule | MON | 4 | 2023 |
| Barium | MR | 2 | 1988 |
| Chromium | MR | 2 | 1988 |
| Lead and Copper Rule | MR | 2 | 1990 |
| Mercury | MR | 2 | 1988 |
| Nitrate | MR | 2 | 1988 |
| Selenium | MR | 2 | 1988 |
| Arsenic | MR | 2 | 1988 |
| Cadmium | MR | 2 | 1988 |
| Fluoride | MR | 1 | 1988 |
| Total Haloacetic Acids (HAA5) | MR | 1 | 2025 |
| TTHM | MR | 1 | 2025 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.