ST MARYS SCH
PWS ID: WI4360598 · CATO, Wisconsin 54230
Population Served
226
Total Violations
198
Health-Based Violations
5
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Manitowoc
- School/Daycare
- Yes
- MCL Violations
- 5
- Monitoring Violations
- 190
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Coliform (TCR) | MR | 8 | 1995 |
| Coliform (TCR) | MCL | 5 | 2004 |
| Lead and Copper Rule | MR | 4 | 2007 |
| Nitrate | MR | 4 | 1997 |
| Chromium | MR | 3 | 2001 |
| Mercury | MR | 3 | 2001 |
| Nickel | MR | 3 | 2001 |
| Nitrite | MR | 3 | 2001 |
| Selenium | MR | 3 | 2001 |
| Thallium, Total | MR | 3 | 2001 |
| Endrin | MR | 3 | 2001 |
| BHC-GAMMA | MR | 3 | 2001 |
| Dalapon | MR | 3 | 2001 |
| Endothall | MR | 3 | 2001 |
| Simazine | MR | 3 | 2001 |
| Picloram | MR | 3 | 2001 |
| Dinoseb | MR | 3 | 2001 |
| Hexachlorocyclopentadiene | MR | 3 | 2001 |
| Atrazine | MR | 3 | 2001 |
| Heptachlor | MR | 3 | 2001 |
| 2,4-D | MR | 3 | 2001 |
| HEXACHLOROBENZENE | MR | 3 | 2001 |
| OXAMYL | MR | 3 | 2001 |
| Xylenes, Total | MR | 3 | 2001 |
| DICHLOROMETHANE | MR | 3 | 2001 |
| o-Dichlorobenzene | MR | 3 | 2001 |
| p-Dichlorobenzene | MR | 3 | 2001 |
| Vinyl chloride | MR | 3 | 2001 |
| Carbon tetrachloride | MR | 3 | 2001 |
| 1,2-Dichloropropane | MR | 3 | 2001 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.