Public Water Systems
5,117 active public water systems in IL, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
|---|---|---|---|---|
| I-39 Shell Express | Rockford, IL | 500 | 9 | - |
| Walmart Supercenter East Peoria | Vista, IL | 500 | 2 | - |
| Supermart Shell | Kenosha, IL | 500 | 0 | - |
| Randall Oaks Park Comm Shelter | West Dundee, IL | 500 | 24 | - |
| St Marys of Fremont Church | Waukegan, IL | 500 | 0 | - |
| North Boone High School | Poplar Grove, IL | 500 | 376 | - |
| Siegals Cottonwood Farms | Crest Hill, IL | 500 | 0 | - |
| Marianjoy Rehab Hospital | Wheaton, IL | 500 | 156 | - |
| Dunkin Donuts Long Grove | Arlington Heights, IL | 500 | 3 | - |
| The Pasture Church | Hudson, IL | 500 | 0 | - |
| Quentin RD Bible Baptist Ch | Lake Zurich, IL | 499 | 6 | - |
| Aqua Illinois-Sun River Terrace | Kankakee, IL | 498 | 375 | - |
| Golf | Golf, IL | 497 | 110 | - |
| Congerville | Congerville, IL | 497 | 13 | - |
| Ullin | Ullin, IL | 496 | 63 | - |
| North Meadow Village MHP | Normal, IL | 495 | 55 | - |
| Croppers 1st 4th and 5th Addition | Milan, IL | 495 | 26 | - |
| Bowen | Bowen, IL | 494 | 65 | - |
| Buckner | Buckner, IL | 494 | 38 | - |
| Junction City | Centralia, IL | 494 | 24 | - |
| Scott County Rural Water Co-Op | Winchester, IL | 493 | 17 | - |
| Cherry | Peru, IL | 490 | 101 | - |
| Woodland a and B MHP | Dixon, IL | 490 | 80 | - |
| Prairie Path Water Company-Wildwood | McHenry, IL | 490 | 37 | - |
| Thompsonville | Thompsonville, IL | 486 | 14 | - |
| Iuka | Iuka, IL | 486 | 18 | - |
| Burnt Prairie | Burnt Prairie, IL | 486 | 5 | - |
| Joliet Inpatient Treatment Center | Joliet, IL | 486 | 0 | - |
| Aqua Illinois-Nunda | Kankakee, IL | 485 | 194 | - |
| Fithian | Fithian, IL | 485 | 145 | - |
| Medora | Jerseyville, IL | 484 | 45 | - |
| West Liberty-Dundas Water District | Dundas, IL | 484 | 61 | Clean |
| St Peter | St Peter, IL | 483 | 35 | - |
| Altona | Altona, IL | 483 | 46 | Clean |
| Buda | Peru, IL | 482 | 348 | Clean |
| Mount Auburn | Mt. Auburn, IL | 480 | 50 | - |
| Towanda | Towanda, IL | 480 | 63 | - |
| United School District 304 | Monmouth, IL | 480 | 111 | - |
| San Jose | San Jose, IL | 479 | 30 | - |
| Versailles | Versailles, IL | 478 | 37 | - |
| Hammond | Hammond, IL | 478 | 38 | - |
| Shangri-La MHP | Barrington, IL | 475 | 16 | - |
| Alsey-Glasgow Water Commission | Winchester, IL | 475 | 35 | - |
| Cornerstone Christian Academy | Bloomington, IL | 475 | 99 | - |
| Solstice Advanced Materials US, Inc | Metropolis, IL | 470 | 174 | - |
| Ledgewood Elementary School | Roscoe, IL | 470 | 220 | - |
| Emden | Emden, IL | 467 | 8 | - |
| Ohio | Ohio, IL | 465 | 157 | - |
| Melvin | Melvin, IL | 465 | 60 | - |
| Naplate | Ottawa, IL | 465 | 477 | - |