FOUR WILLOWS GOLF COURSE
PWS ID: IL3130997 · MASON CITY, Illinois 62664
Population Served
25
Total Violations
19
Health-Based Violations
2
Water Source
Groundwater
System Details
- System Type
- Transient Non-Community
- Owner Type
- Private
- Connections
- 1
- County
- Mason
- School/Daycare
- No
- MCL Violations
- 2
- Monitoring Violations
- 15
- Treatment Tech Violations
- 0
Violation History
Contaminant violations recorded by EPA.
| Contaminant | Category | Count | Latest |
|---|---|---|---|
| Nitrate | MR | 12 | 2023 |
| Revised Total Coliform Rule | MON | 3 | 2024 |
| Coliform (TCR) | MCL | 2 | 2009 |
| Public Notice | Other | 1 | 2025 |
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025.
This data is provided for informational purposes only.