WHOS NEXT
PWS ID: WI4190219 · NIAGARA, Wisconsin 54151
Population Served
25
Total Violations
14
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Florence
- School/Daycare
- No
- MCL Violations
- 4
- Monitoring Violations
- 8
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 5 | 2009 |
| Coliform (TCR) | MCL | 4 | 1995 |
| Coliform (TCR) | MR | 3 | 2009 |
| Public Notice | Other | 2 | 2009 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.