Mason County, Illinois
6 active water systems in this county.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Forest City | 222 | Groundwater | 8 | 1 |
| Easton | 334 | Groundwater | 7 | 1 |
| Manito | 1,552 | Groundwater | 18 | 0 |
| Havana | 2,963 | Groundwater | 7 | 0 |
| San Jose | 479 | Groundwater | 4 | 0 |
| Mason City | 2,558 | Groundwater | 1 | 0 |