Public Water Systems
5,117 active water systems in IL.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| TROY | TROY, IL | 16,962 | 24 | Detected |
| MARION | MARION, IL | 16,855 | 136 | Detected |
| NORTH CHICAGO | NORTH CHICAGO, IL | 16,813 | 154 | Clean |
| CANTON | CANTON, IL | 16,748 | 65 | Detected |
| COUNTRY CLUB HILLS | COUNTRY CLUB HILLS, IL | 16,500 | 24 | Clean |
| BRIDGEVIEW | BRIDGEVIEW, IL | 16,467 | 21 | Clean |
| CHATHAM | CHATHAM, IL | 16,423 | 39 | Clean |
| WESTCHESTER | WESTCHESTER, IL | 16,241 | 23 | Clean |
| LA GRANGE | LA GRANGE, IL | 16,200 | 18 | Clean |
| MOUNT VERNON | MOUNT VERNON, IL | 15,793 | 39 | Detected |
| PALOS HEIGHTS | PALOS HEIGHTS, IL | 15,500 | 15 | Clean |
| NORRIDGE | NORRIDGE, IL | 15,251 | 32 | Clean |
| CAHOKIA HEIGHTS | CAHOKIA HEIGHTS, IL | 15,250 | 0 | Detected |
| BETHALTO | BETHALTO, IL | 15,210 | 25 | Detected |
| IL AMERICAN-LINCOLN | GODFREY, IL | 15,200 | 31 | Detected |
| DIXON | DIXON, IL | 15,096 | 280 | Clean |
| MACOMB | MACOMB, IL | 15,052 | 195 | Detected |
| WILDWOOD SUBDIVISION - LAKE CO PW | LIBERTYVILLE, IL | 14,832 | 53 | Clean |
| MIDLOTHIAN | MIDLOTHIAN, IL | 14,819 | 66 | Clean |
| WASHINGTON | WASHINGTON, IL | 14,793 | 20 | Clean |
| IL AMERICAN-STERLING | GODFREY, IL | 14,782 | 17 | Detected |
| MORRIS | MORRIS, IL | 14,775 | 108 | Detected |
| HICKORY HILLS | HICKORY HILLS, IL | 14,505 | 13 | Clean |
| LINDENHURST | LINDENHURST, IL | 14,500 | 89 | Clean |
| FOREST PARK | FOREST PARK, IL | 14,340 | 40 | Clean |
| ANTIOCH | ANTIOCH, IL | 14,175 | 115 | Detected |
| CHICAGO RIDGE | CHICAGO RIDGE, IL | 14,130 | 14 | Clean |
| WAUCONDA | WAUCONDA, IL | 14,084 | 29 | Clean |
| WOOD DALE | WOOD DALE, IL | 14,012 | 12 | Clean |
| CASEYVILLE | CASEYVILLE, IL | 13,798 | 58 | Detected |
| LINCOLNWOOD | LINCOLONWOOD, IL | 13,463 | 18 | Clean |
| CHANNAHON | CHANNAHON, IL | 13,380 | 138 | Detected |
| WESTERN SPRINGS | WESTERN SPRINGS, IL | 13,274 | 37 | Detected |
| HAZEL CREST | HAZEL CREST, IL | 13,098 | 35 | Clean |
| LA GRANGE PARK | LAGRANGE PARK, IL | 13,011 | 16 | Clean |
| RANTOUL | RANTOUL, IL | 13,000 | 16 | Clean |
| U OF I-CHAMPAIGN | CHAMPAIGN, IL | 13,000 | 14 | Clean |
| NORTHLAKE | NORTH LAKE, IL | 12,840 | 19 | Clean |
| TAYLORVILLE | TAYLORVILLE, IL | 12,806 | 89 | Clean |
| MINOOKA | MINOOKA, IL | 12,800 | 266 | Detected |
| JERSEY RWC | JERSEYVILLE, IL | 12,750 | 32 | Detected |
| HERRIN | HERRIN, IL | 12,747 | 19 | Detected |
| GLEN CARBON | GLEN CARBON, IL | 12,618 | 42 | Detected |
| PLANO | PLANO, IL | 12,600 | 57 | Clean |
| KEWANEE | KEWANEE, IL | 12,509 | 432 | Detected |
| RICHTON PARK | RICHTON PARK, IL | 12,504 | 201 | Detected |
| MARKHAM | MARKHAM, IL | 12,500 | 148 | Detected |
| WINNETKA | DEERFIELD, IL | 12,475 | 31 | Clean |
| WARRENVILLE | WARRENVILLE, IL | 12,350 | 201 | Detected |
| EFFINGHAM | EFFINGHAM, IL | 12,252 | 40 | Clean |