CALLAHAN LAKE RESORT
PWS ID: WI8580811 · HAYWARD, Wisconsin 54843-9804
Population Served
100
Total Violations
23
Health-Based Violations
9
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Sawyer
- School/Daycare
- No
- MCL Violations
- 9
- Monitoring Violations
- 10
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MCL | 9 | 1999 |
| Nitrate | MR | 5 | 2004 |
| Coliform (TCR) | MR | 5 | 2004 |
| Revised Total Coliform Rule | RPT | 4 | 2022 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.