Carroll County, Illinois
8 active water systems in this county.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Shannon | 801 | Groundwater | 64 | 52 |
| Chadwick | 523 | Groundwater | 57 | 1 |
| Lanark | 1,504 | Groundwater | 18 | 0 |
| Savanna | 3,020 | Groundwater | 5 | 0 |
| Mount Carroll | 1,479 | Groundwater | 4 | 0 |
| Thomson | 580 | Groundwater | 4 | 0 |
| Thomson Maximum Security Center | 2,166 | Groundwater Purchased | 0 | 0 |
| Milledgeville | 989 | Groundwater | 0 | 0 |