Public Water Systems
5,117 active water systems in IL.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| POSEN | POSEN, IL | 5,331 | 57 | Clean |
| PIKE COUNTY PWD 1 | PITTSFIELD, IL | 5,327 | 31 | Clean |
| SANGAMON VALLEY PWD | MAHOMET, IL | 5,300 | 30 | Clean |
| GENOA | GENOA, IL | 5,298 | 66 | Detected |
| MITCHELL PWD | GRANITE CITY, IL | 5,253 | 29 | Detected |
| FLORA | FLORA, IL | 5,233 | 49 | Clean |
| IL AMERICAN-FERNWAY | GODFREY, IL | 5,223 | 27 | Clean |
| EUREKA | EUREKA, IL | 5,216 | 131 | Clean |
| BERKELEY | BERKELEY, IL | 5,214 | 50 | Clean |
| MONEE | MONEE, IL | 5,148 | 265 | Detected |
| CATERPILLAR TRAIL PWD | EAST PEORIA, IL | 5,125 | 20 | Clean |
| AQUA ILLINOIS-WILLOWBROOK | KANKAKEE, IL | 5,100 | 15 | Detected |
| MARSEILLES | MARSEILLES, IL | 5,061 | 158 | Detected |
| BRIGHTON | BRIGHTON, IL | 5,041 | 89 | Detected |
| NIABI ZOO | COAL VALLEY, IL | 5,000 | 25 | — |
| U OF I CHICAGO MEDICAL CENTER | CHICAGO, IL | 5,000 | 190 | Clean |
| MURDALE PWD | MURPHYSBORO, IL | 4,963 | 17 | Clean |
| MILAN | MILAN, IL | 4,945 | 161 | Detected |
| CREVE COEUR | CREVE COEUR, IL | 4,934 | 55 | Detected |
| OLYMPIA FIELDS | OLYMPIA FIELDS, IL | 4,922 | 47 | Clean |
| ANNA | ANNA, IL | 4,910 | 72 | Detected |
| ROUND LAKE PARK | ROUND LAKE PARK, IL | 4,900 | 30 | Clean |
| TUSCOLA | TUSCOLA, IL | 4,875 | 41 | Clean |
| PALOS PARK | PALOS PARK, IL | 4,873 | 4 | Clean |
| WEST PRAIRIE WATER COMPANY | ARTHUR, IL | 4,800 | 18 | — |
| BREESE | BREESE, IL | 4,772 | 54 | Clean |
| BYRON | BYRON, IL | 4,743 | 423 | Clean |
| CHERRY VALLEY | CHERRY VALLEY, IL | 4,731 | 22 | Clean |
| SULLIVAN | SULLIVAN, IL | 4,729 | 31 | Clean |
| PETERSBURG | PETERSBURG, IL | 4,725 | 18 | Clean |
| ELDORADO | ELDORADO, IL | 4,715 | 38 | Clean |
| LEBANON | LEBANON, IL | 4,714 | 46 | Clean |
| BEECHER | BEECHER, IL | 4,713 | 28 | Detected |
| FREEBURG | FREEBURG, IL | 4,707 | 62 | Detected |
| FOX RIVER GROVE | FOX RIVER GROVE, IL | 4,702 | 51 | Detected |
| PITTSFIELD | PITTSFIELD, IL | 4,697 | 109 | Clean |
| DUPO | DUPO, IL | 4,684 | 8 | Detected |
| CALHOUN COUNTY RWD | HARDIN, IL | 4,675 | 30 | Detected |
| STONE PARK | WEST CHICAGO, IL | 4,576 | 30 | Clean |
| ATHENS | ATHENS, IL | 4,575 | 120 | Clean |
| AUBURN | AUBURN, IL | 4,574 | 51 | Clean |
| LAWRENCEVILLE | LAWRENCEVILLE, IL | 4,524 | 73 | Clean |
| SOUTH HIGHWAY PWD | MAKANDA, IL | 4,501 | 38 | Clean |
| PAXTON | PAXTON, IL | 4,500 | 7 | Clean |
| OGLESBY | OGLESBY, IL | 4,500 | 206 | Detected |
| HILLSBORO | HILLSBORO, IL | 4,402 | 111 | Clean |
| DWIGHT | DWIGHT, IL | 4,400 | 40 | Clean |
| SPARTA | SPARTA, IL | 4,395 | 189 | Clean |
| RIVERTON | RIVERTON, IL | 4,279 | 62 | Clean |
| CORTLAND | CORTLAND, IL | 4,270 | 199 | Detected |