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 |
|---|---|---|---|---|
| Otter Creek Lake Utilities District | Davis, IL | 2,342 | 138 | - |
| Thornton | Thornton, IL | 2,333 | 16 | - |
| Egyptian Water Company | Nashville, IL | 2,330 | 95 | - |
| Aqua Illinois-Timber Ridge | Kankakee, IL | 2,322 | 0 | - |
| Oblong | Oblong, IL | 2,321 | 6 | - |
| White Hall | White Hall, IL | 2,313 | 128 | - |
| Altamont | Altamont, IL | 2,300 | 100 | - |
| Lake Barrington Shores Subdivsion | Lake Barrington, IL | 2,300 | 216 | - |
| Arthur | Arthur, IL | 2,300 | 6 | - |
| Prairie Path Water Company-Galena | Galena, IL | 2,294 | 76 | Clean |
| Prospect Heights | Prospect Heights, IL | 2,280 | 51 | - |
| Henry | Henry, IL | 2,230 | 63 | - |
| Elwood | Elwood, IL | 2,229 | 292 | - |
| Tamaroa | Duquoin, IL | 2,197 | 4 | - |
| Pecatonica | Pecatonica, IL | 2,195 | 75 | - |
| Mount Olive | Aviston, IL | 2,193 | 269 | Clean |
| Southwater Inc | Tamms, IL | 2,185 | 0 | - |
| Groveland Township Water District | Groveland, IL | 2,185 | 4 | - |
| Thomson Maximum Security Center | Thomson, IL | 2,166 | 0 | - |
| Graham Correctional Site | Hillsboro, IL | 2,155 | 7 | - |
| Norris City | Norris City, IL | 2,155 | 33 | - |
| Carbon Cliff | Carbon Cliff, IL | 2,134 | 132 | - |
| Tremont | Tremont, IL | 2,114 | 9 | - |
| Prophetstown | Prophetstown, IL | 2,100 | 44 | - |
| Tyson Fresh Meats Inc | Geneseo, IL | 2,100 | 23 | - |
| Richmond | Richmond, IL | 2,087 | 58 | - |
| Cambridge | Cambridge, IL | 2,086 | 108 | - |
| Carrier Mills | Carrier Mills, IL | 2,085 | 82 | - |
| Ej Water-McWc | Dieterich, IL | 2,075 | 35 | - |
| Elmwood | Elmwood, IL | 2,058 | 111 | - |
| Farmer City | Farmer City, IL | 2,055 | 26 | - |
| IL American-Fisher | Godfrey, IL | 2,026 | 10 | - |
| Limestone-Walters Pwd | Peoria, IL | 2,023 | 10 | - |
| Clay County Water Inc | Flora, IL | 2,015 | 22 | - |
| Rockdale | Rockdale, IL | 2,012 | 341 | - |
| Hinckley | Hinckley, IL | 2,006 | 255 | - |
| Kirkland | Kirkland, IL | 2,000 | 26 | - |
| Roanoke | Roanoke, IL | 2,000 | 36 | - |
| Southeast Joliet SD | Joliet, IL | 2,000 | 338 | - |
| Jbs Corporation | Beardstown, IL | 2,000 | 201 | - |
| Waubonsee Community College | Sugar Grove, IL | 2,000 | 74 | - |
| Phoenix | Phoenix, IL | 1,994 | 244 | - |
| Clinton County East Pwd | Centralia, IL | 1,980 | 37 | - |
| Dix-Kell Water Commssion | Dix, IL | 1,972 | 22 | - |
| New Athens | New Athens, IL | 1,970 | 42 | - |
| Mitchellsville Pwd | Harrisburg, IL | 1,970 | 14 | - |
| Merrionette Park | Merrionette Park, IL | 1,969 | 59 | - |
| Sterling Estates MHP | Farmington Hills, IL | 1,954 | 80 | - |
| Wonder Lake (Niu) | Wonder Lake, IL | 1,950 | 402 | - |
| Henderson Pwd | Carlinville, IL | 1,937 | 74 | - |