St. Clair County, Illinois
23 active water systems in this county.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Meadowbrook Mh Community, Llc | 463 | Surface Water Purchased | 68 | 14 |
| Lenzburg | 680 | Surface Water Purchased | 18 | 3 |
| Caseyville | 13,798 | Surface Water Purchased | 12 | 3 |
| New Athens | 1,970 | Surface Water Purchased | 11 | 3 |
| Kaskaskia Water District | 0 | Surface Water | 26 | 2 |
| Marissa | 1,921 | Surface Water Purchased | 21 | 2 |
| Fsh Water Commission | 313 | Surface Water Purchased | 18 | 2 |
| Fayetteville | 441 | Surface Water Purchased | 7 | 2 |
| O Fallon | 46,603 | Surface Water Purchased | 2 | 2 |
| Il American-east St Louis | 131,368 | Surface Water | 3 | 1 |
| Ildu Lepere Mhp, Llc | 250 | Surface Water Purchased | 26 | 0 |
| Millstadt | 4,071 | Surface Water Purchased | 9 | 0 |
| St Libory | 628 | Groundwater | 7 | 0 |
| Valley View Estates | 580 | Surface Water Purchased | 4 | 0 |
| Dupo | 4,684 | Groundwater | 3 | 0 |
| Smithton | 4,006 | Surface Water Purchased | 3 | 0 |
| Mascoutah | 8,759 | Surface Water Purchased | 1 | 0 |
| Lebanon | 4,714 | Surface Water Purchased | 1 | 0 |
| Summerfield | 347 | Surface Water Purchased | 1 | 0 |
| Cahokia Heights | 15,250 | Surface Water Purchased | 0 | 0 |
| Freeburg | 4,707 | Surface Water Purchased | 0 | 0 |
| Southwestern Il Correctional Center | 563 | Surface Water Purchased | 0 | 0 |
| Arapaho Village Mhp | 368 | Surface Water Purchased | 0 | 0 |