Public Water Systems
5,117 active water systems in IL.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| OTTER LAKE WATER COMMISSION | VIRDEN, IL | 1,318 | 71 | — |
| BARRY | BARRY, IL | 1,318 | 37 | — |
| ASSUMPTION | ASSUMPTION, IL | 1,315 | 53 | — |
| WALNUT | WALNUT, IL | 1,311 | 31 | — |
| MILFORD | MILFORD, IL | 1,306 | 83 | — |
| TAYLORVILLE CORRECTIONAL CENTER | TAYLORVILLE, IL | 1,300 | 12 | — |
| BLUE MOUND | MOWEAQUA, IL | 1,300 | 159 | — |
| WYOMING | WYOMING, IL | 1,300 | 141 | — |
| PRAIRIE PATH WATER COMPANY-LAKE WILDWOOD | OAKWOOD, IL | 1,295 | 12 | — |
| GOOD SHEPHERD HOSPITAL | BARRINGTON, IL | 1,290 | 167 | — |
| COUNTRYSIDE LAKE SUBDIVISION -LAKE CO PW | LIBERTYVILLE, IL | 1,287 | 35 | — |
| NEW HOPE WATERWORKS CORP | FAIRFIELD, IL | 1,285 | 39 | — |
| TOLEDO | TOLEDO, IL | 1,278 | 15 | — |
| IL AMERICAN-WASHINGTON ESTATES | GODFREY, IL | 1,278 | 121 | — |
| PETROLIA PWD | BRIDGEPORT, IL | 1,275 | 36 | — |
| ST ELMO | ST ELMO, IL | 1,272 | 105 | — |
| COBDEN | COBDEN, IL | 1,267 | 33 | — |
| LADD | LADD, IL | 1,263 | 188 | — |
| VALMEYER | VALMEYER, IL | 1,263 | 62 | Detected |
| HARTFORD | HARTFORD, IL | 1,260 | 25 | — |
| GRIGGSVILLE | GRIGGSVILLE, IL | 1,259 | 36 | — |
| CHATSWORTH | CHATSWORTH, IL | 1,256 | 17 | — |
| HANNA CITY | HANNA CITY, IL | 1,253 | 96 | — |
| LAKE WILLIAMSON CHRISTIAN CENTER | CARLINVILLE, IL | 1,250 | 117 | — |
| PROSPECT HEIGHTS PLAZA | PROSPECT HEIGHTS, IL | 1,240 | 478 | — |
| WAYNE CITY | WAYNE CITY, IL | 1,239 | 24 | — |
| BLACKHAWK ESTATES LLC | CHICAGO, IL | 1,238 | 152 | — |
| PRAIRIE PATH WATER COMPANY-KILLARNEY | MCHENRY, IL | 1,232 | 27 | — |
| ALBERS | ALBERS, IL | 1,231 | 76 | — |
| WARRENSBURG | WARRENSBURG, IL | 1,230 | 50 | — |
| FORREST | FORREST, IL | 1,225 | 5 | — |
| IL AMERICAN-ARBURY | GODFREY, IL | 1,225 | 157 | — |
| HILLCREST | ROCHELLE, IL | 1,224 | 225 | — |
| MACON | MACON, IL | 1,205 | 10 | — |
| LOUISVILLE | LOUISVILLE, IL | 1,201 | 52 | — |
| DOWNS | DOWNS, IL | 1,201 | 196 | — |
| HOMER | HOMER, IL | 1,200 | 43 | — |
| MARTINSVILLE | MARTINSVILLE, IL | 1,200 | 57 | — |
| CHRISMAN | CHRISMAN, IL | 1,200 | 352 | — |
| LAHARPE | LA HARPE, IL | 1,200 | 161 | — |
| NAUVOO | NAUVOO, IL | 1,200 | 303 | — |
| AQUA ILLINOIS-SKYLINE (NORTHERN) | KANKAKEE, IL | 1,200 | 799 | — |
| ST ANNE | ST ANNE, IL | 1,200 | 51 | — |
| STILLMAN VALLEY | STILLMAN VALLEY, IL | 1,200 | 20 | — |
| WINDSOR | WINDSOR, IL | 1,200 | 71 | — |
| PARK CENTER OF KEMPER LAKES AVIANDS | LONG GROVE, IL | 1,200 | 294 | — |
| SWEDISH COVENANT HOSPITAL | CHICAGO, IL | 1,200 | 68 | — |
| GALLATIN-WHITE WATER DISTRICT | NORRIS CITY, IL | 1,196 | 27 | — |
| SOUTH LAWRENCE WATER CORP | SUMNER, IL | 1,195 | 12 | — |
| LIBERTY-LEDFORD PWD | HARRISBURG, IL | 1,195 | 11 | — |