Public Water Systems
5,117 active water systems in IL.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| VOLO | VOLO, IL | 6,629 | 136 | Clean |
| IL AMERICAN-DUPAGE UTILITY | GODFREY, IL | 6,613 | 15 | — |
| PRAIRIE PATH WATER COMPANY-LAKE HOLIDAY | ST. CHARLES, IL | 6,601 | 44 | Clean |
| LA GRANGE HIGHLANDS SANITARY DISTRICT | LAGRANGE, IL | 6,600 | 6 | Clean |
| ILLINOIS STATE UNIVERSITY-NORMAL | NORMAL, IL | 6,600 | 100 | Clean |
| CARLINVILLE | CARLINVILLE, IL | 6,598 | 243 | Clean |
| MAHOMET | MAHOMET, IL | 6,580 | 22 | Clean |
| WINTHROP HARBOR | WINTHROP HARBOR, IL | 6,565 | 102 | Clean |
| ELBURN | ELBURN, IL | 6,559 | 276 | Detected |
| GENESEO | GENESEO, IL | 6,539 | 35 | Detected |
| NORTHERN ILLINOIS UNIVERSITY-DEKALB | DEKALB, IL | 6,500 | 36 | Clean |
| CARTERVILLE | CARTERVILLE, IL | 6,484 | 29 | Detected |
| AQUA ILLINOIS-CANDLEWICK DVN | KANKAKEE, IL | 6,426 | 87 | Clean |
| COUNTRYSIDE | COUNTRYSIDE, IL | 6,420 | 22 | Clean |
| DALLAS RURAL WATER DISTRICT | HAMILTON, IL | 6,370 | 23 | Clean |
| METROPOLIS | METROPOLIS, IL | 6,309 | 133 | Clean |
| CARMI | CARMI, IL | 6,307 | 31 | Clean |
| NORTHSHORE UNIVERSITY EVANSTON | CHICAGO, IL | 6,300 | 51 | Clean |
| FORT MASSAC PWD | METROPOLIS, IL | 6,290 | 31 | Clean |
| FAIRFIELD | FAIRFIELD, IL | 6,202 | 138 | Clean |
| WILLIAMSVILLE | WILLIAMSVILLE, IL | 6,198 | 8 | Clean |
| BRAIDWOOD | BRAIDWOOD, IL | 6,194 | 165 | Detected |
| SHELBYVILLE | SHELBYVILLE, IL | 6,174 | 11 | Clean |
| CHILLICOTHE | CHILLICOTHE, IL | 5,996 | 137 | Detected |
| BEARDSTOWN | BEARDSTOWN, IL | 5,951 | 52 | Clean |
| PEORIA HEIGHTS | PEORIA HEIGHTS, IL | 5,908 | 74 | Detected |
| MOUNT ZION | MOUNT ZION, IL | 5,833 | 159 | Detected |
| PINCKNEYVILLE | PINCKNEYVILLE, IL | 5,804 | 169 | Clean |
| HOOPESTON | HOOPESTON, IL | 5,802 | 13 | Detected |
| CLARK-EDGAR RWD | MARSHALL, IL | 5,801 | 6 | Clean |
| PANA | PANA, IL | 5,800 | 320 | Detected |
| EAST ALTON | EAST ALTON, IL | 5,786 | 21 | Detected |
| STAUNTON | STAUNTON, IL | 5,756 | 201 | Detected |
| MILL CREEK PWD | QUINCY, IL | 5,755 | 15 | Detected |
| GRANDWOOD PARK SUBDIVISION - LAKE CO PW | LIBERTYVILLE, IL | 5,751 | 61 | Clean |
| COAL CITY | COAL CITY, IL | 5,749 | 621 | Detected |
| WILMINGTON | WILMINGTON, IL | 5,624 | 335 | Detected |
| FAYETTE WATER COMPANY | BROWNSTOWN, IL | 5,608 | 129 | Clean |
| LAKE BLUFF | LAKE BLUFF, IL | 5,600 | 49 | Clean |
| SPRING VALLEY | SPRING VALLEY, IL | 5,582 | 127 | Detected |
| MILLSTONE PWD | NASHVILLE, IL | 5,565 | 62 | Clean |
| MONTICELLO | MONTICELLO, IL | 5,548 | 11 | Clean |
| EASTERN ILLINOIS UNIVERSITY | CHARLESTON, IL | 5,500 | 46 | Clean |
| WATSEKA | WATSEKA, IL | 5,500 | 91 | Clean |
| NORTHEAST MOUNT VERNON WATER COMPANY | MT VERNON, IL | 5,483 | 23 | Detected |
| NORTHFIELD | NORTHFIELD, IL | 5,470 | 6 | Clean |
| PARK CITY | PARK CITY, IL | 5,425 | 52 | Clean |
| ROBBINS | ROBBINS, IL | 5,415 | 258 | Clean |
| AQUA ILLINOIS-OAK BROOK | KANKAKEE, IL | 5,361 | 1 | — |
| HIGHWOOD | HIGHWOOD, IL | 5,335 | 37 | Clean |