NORTHERNAIRE SANITARY DISTRICT
PWS ID: WI7440812 · THREE LAKES, Wisconsin 54562
Population Served
315
Total Violations
56
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Community
- Owner Type
- Local
- Connections
- 7
- County
- Oneida
- School/Daycare
- No
- MCL Violations
- 0
- Monitoring Violations
- 42
- Treatment Tech Violations
- 4
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| TTHM | MR | 8 | 2024 |
| Total Haloacetic Acids (HAA5) | MR | 8 | 2024 |
| Lead and Copper Rule | MR | 8 | 2024 |
| Revised Total Coliform Rule | MON | 8 | 2025 |
| Consumer Confidence Rule | Other | 6 | 2025 |
| Coliform (TCR) | MR | 5 | 2015 |
| Chlorine | MR | 5 | 2015 |
| Revised Total Coliform Rule | RPT | 4 | 2024 |
| Revised Total Coliform Rule | TT | 4 | 2024 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.