HOLY TRINITY CHURCH & LEARNING CENTER
PWS ID: WI2681107 · OCONOMOWOC, Wisconsin 53066
Population Served
505
Total Violations
71
Health-Based Violations
8
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Waukesha
- School/Daycare
- Yes
- MCL Violations
- 8
- Monitoring Violations
- 55
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 31 | 2004 |
| Lead and Copper Rule | MR | 13 | 2014 |
| Nitrate | MR | 8 | 2003 |
| Public Notice | Other | 8 | 2004 |
| Coliform (TCR) | MCL | 8 | 1998 |
| Nitrite | MR | 3 | 2001 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.