Public Water Systems
5,117 active public water systems in IL, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| Lakewood | Lakewood, IL | 4,267 | 242 | - |
| Hometown | Hometown, IL | 4,240 | 32 | Clean |
| Georgetown | Georgetown, IL | 4,200 | 271 | Clean |
| Morrison | Morrison, IL | 4,188 | 4 | Clean |
| Aqua Illinois-Peotone | Kankakee, IL | 4,182 | 27 | Clean |
| New Baden | New Baden, IL | 4,178 | 15 | Detected |
| Woodhaven | Sublette, IL | 4,100 | 76 | Clean |
| Millstadt | Swansea, IL | 4,071 | 57 | Detected |
| Smithton | Smithton, IL | 4,006 | 65 | - |
| Wasco SD | Wasco, IL | 4,000 | 110 | Clean |
| Woodsmoke Ranch | Seneca, IL | 4,000 | 10 | - |
| Burnham | Burnham, IL | 3,989 | 59 | Clean |
| North East Central Pwd | Edwardsville, IL | 3,975 | 25 | Detected |
| Coal Valley Pwd | Marion, IL | 3,960 | 23 | Clean |
| Hamilton County Water District | McLeansboro, IL | 3,958 | 19 | Detected |
| Rosemont | Rosemont, IL | 3,952 | 11 | Clean |
| Marshall | Marshall, IL | 3,947 | 58 | Clean |
| Corinth Pwd | Pittsburg, IL | 3,927 | 16 | Detected |
| South Chicago Heights | South Chicago Heights, IL | 3,924 | 18 | Clean |
| Saline Valley Conservancy District | Eldorado, IL | 3,921 | 31 | Clean |
| Westville | Westville, IL | 3,917 | 90 | Clean |
| Metamora | Metamora, IL | 3,895 | 29 | Clean |
| Coal Valley | Coal Valley, IL | 3,873 | 24 | Clean |
| Wonder Lake | Wonder Lake, IL | 3,870 | 403 | Clean |
| Rochester | Rochester, IL | 3,856 | 46 | Clean |
| Red Bud | Red Bud, IL | 3,804 | 67 | Clean |
| Greene County RWD | Carrollton, IL | 3,786 | 18 | - |
| Pleasant Valley Pwd | Peoria, IL | 3,783 | 58 | Detected |
| Embarras Area Water District | Charleston, IL | 3,750 | 32 | Clean |
| Gillespie | Gillespie, IL | 3,737 | 275 | Clean |
| Lcpw - Pekara Subdivision | Libertyville, IL | 3,711 | 5 | Clean |
| Rend Lake Inter-City Water System | Benton, IL | 3,650 | 26 | - |
| Fountain Water District | Valmeyer, IL | 3,650 | 26 | Clean |
| Fairbury | Fairbury, IL | 3,633 | 7 | Clean |
| Riverwoods | Vernon Hills, IL | 3,618 | 27 | Clean |
| IL American-Tolono | Godfrey, IL | 3,604 | 73 | - |
| Woodlawn | Woodlawn, IL | 3,587 | 31 | Detected |
| Three County Pwd | New Douglas, IL | 3,575 | 38 | - |
| Hainesville | Volo, IL | 3,528 | 107 | Clean |
| Western Wayne Water District | Wayne City, IL | 3,516 | 94 | - |
| Johnston City | Johnston City, IL | 3,509 | 20 | Detected |
| South Jacksonville | South Jacksonville, IL | 3,508 | 94 | Detected |
| Gibson City | Gibson City, IL | 3,500 | 19 | Clean |
| Le Roy | Leroy, IL | 3,498 | 105 | Clean |
| Forsyth | Forsyth, IL | 3,490 | 12 | Clean |
| Tritownship Water District | Trenton, IL | 3,470 | 77 | Clean |
| Aledo | Aledo, IL | 3,470 | 54 | Clean |
| Oregon | Oregon, IL | 3,449 | 54 | Clean |
| Hardinville Water Company | Robinson, IL | 3,403 | 16 | - |
| Lutheran General Hospital | Libertyville, IL | 3,400 | 203 | Clean |