MASON CO EASTERN HS
PWS ID: MI2007253 · CUSTER, Michigan 49405
Population Served
480
Total Violations
12
Health-Based Violations
4
Water Source
Groundwater
System Details
- System Type
- Non-Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Mason
- School/Daycare
- Yes
- MCL Violations
- 4
- Monitoring Violations
- 8
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Lead and Copper Rule | MR | 4 | 2020 |
| Nitrate | MR | 3 | 2017 |
| Coliform (TCR) | MCL | 2 | 1995 |
| Nitrate | MCL | 2 | 1996 |
| Revised Total Coliform Rule | MON | 1 | 2017 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.