Public Water Systems
5,117 active water systems in IL.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| FREEPORT | FREEPORT, IL | 23,930 | 3 | Detected |
| SOUTH ELGIN | SOUTH ELGIN, IL | 23,648 | 38 | Detected |
| LOVES PARK | LOVES PARK, IL | 23,335 | 237 | Clean |
| ROLLING MEADOWS | ROLLING MEADOWS, IL | 23,329 | 36 | Clean |
| LOCKPORT | LOCKPORT, IL | 23,100 | 197 | Detected |
| YORKVILLE | YORKVILLE, IL | 23,000 | 324 | Detected |
| GREAT LAKES NAVAL TRAINING STATION | GREAT LAKES, IL | 23,000 | 38 | Clean |
| ROSELLE | ROSELLE, IL | 22,897 | 42 | Clean |
| MCHENRY | MCHENRY, IL | 22,335 | 101 | Detected |
| EAST PEORIA | EAST PEORIA, IL | 22,284 | 40 | Detected |
| VILLA PARK | VILLA PARK, IL | 22,263 | 41 | Clean |
| CARBONDALE | CARBONDALE, IL | 22,107 | 42 | Clean |
| BLOOMINGDALE | BLOOMINGDALE, IL | 22,018 | 79 | Clean |
| SOUTH HOLLAND | SOUTH HOLLAND, IL | 22,000 | 37 | Detected |
| PARK FOREST | PARK FOREST, IL | 21,975 | 154 | Detected |
| DARIEN | DARIEN, IL | 21,751 | 15 | Clean |
| BLUE ISLAND | BLUE ISLAND, IL | 21,494 | 23 | Clean |
| EAST MOLINE | EAST MOLINE, IL | 21,374 | 95 | Detected |
| GRAYSLAKE | GRAYSLAKE, IL | 21,248 | 33 | Clean |
| GENEVA | GENEVA, IL | 21,247 | 192 | Clean |
| CREST HILL | CREST HILL, IL | 21,169 | 190 | Detected |
| DOLTON | DOLTON, IL | 20,510 | 83 | Clean |
| LIBERTYVILLE | LIBERTYVILLE, IL | 20,500 | 27 | Detected |
| EVERGREEN PARK | EVERGREEN PARK, IL | 19,943 | 10 | Clean |
| JACKSONVILLE | JACKSONVILLE, IL | 19,903 | 33 | Detected |
| MOKENA | MOKENA, IL | 19,887 | 51 | Clean |
| LAKE ZURICH | LAKE ZURICH, IL | 19,759 | 260 | Detected |
| LAKE FOREST | LAKE FOREST, IL | 19,642 | 33 | Clean |
| MATTOON | MATTOON, IL | 19,500 | 71 | Detected |
| HOMEWOOD | HOMEWOOD, IL | 19,463 | 22 | Detected |
| DEERFIELD | DEERFIELD, IL | 19,196 | 44 | Clean |
| BELLWOOD | BELLWOOD, IL | 19,156 | 53 | Clean |
| ALSIP | ALSIP, IL | 19,063 | 22 | Clean |
| IL AMERICAN-STREATOR | GODFREY, IL | 19,000 | 71 | Detected |
| BROOKFIELD | BROOKFIELD, IL | 18,776 | 48 | Clean |
| SHOREWOOD | SHOREWOOD, IL | 18,645 | 105 | Detected |
| BENSENVILLE | BENSENVILLE, IL | 18,537 | 59 | Clean |
| PALOS HILLS | PALOS HILLS, IL | 18,530 | 18 | Clean |
| SYCAMORE | SYCAMORE, IL | 18,500 | 212 | Detected |
| FRANKLIN PARK | FRANKLIN PARK, IL | 18,467 | 41 | Clean |
| JUSTICE-WILLOW SPRINGS WATER COMMISSION | JUSTICE, IL | 18,457 | 26 | Clean |
| ROUND LAKE | ROUND LAKE, IL | 18,430 | 33 | Clean |
| NORTH AURORA | NORTH AURORA, IL | 18,350 | 210 | Detected |
| MATTESON | MATTESON, IL | 18,293 | 39 | Clean |
| OTTAWA | OTTAWA, IL | 18,097 | 365 | Detected |
| HINSDALE | HINSDALE, IL | 17,900 | 11 | Clean |
| CARY | CARY, IL | 17,826 | 66 | Detected |
| LEMONT | LEMONT, IL | 17,500 | 139 | Detected |
| CHARLESTON | CHARLESTON, IL | 17,286 | 35 | Detected |
| MORTON | MORTON, IL | 17,111 | 56 | Detected |