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 |
| Immanuel Lutheran Church (68544) | Thomasboro, IL | 150 | 4 | - |
| Brandt's of Palatine | Palatine, IL | 150 | 4 | - |
| Kick Off Pizza | St Charles, IL | 150 | 0 | - |
| Pilcher Park Nature Museum | Joliet, IL | 150 | 1 | - |
| Hopewell Academies | Joliet, IL | 150 | 178 | - |
| Maclean Fogg-Hot Form Plant | Savanna, IL | 150 | 67 | - |
| Kings Community School | Kings, IL | 150 | 75 | - |
| River Road Marina & Camping | Oregon, IL | 150 | 29 | - |
| Pine Hills Golf Course | Ottawa, IL | 150 | 3 | - |
| Moraine Hills Sp Northern Woods | Woodstock, IL | 150 | 7 | - |
| Canyon Camp Boy Scouts | Rockford, IL | 150 | 10 | - |
| Miller Comm Consol Sch 210 | Marseilles, IL | 150 | 324 | - |
| Lake Louise Campground - West Well | Byron, IL | 150 | 23 | - |
| Lake Louise Campground - Middle Well | Byron, IL | 150 | 41 | - |
| Manchester School | Poplar Grove, IL | 150 | 33 | - |
| Rookies II | Ingleside, IL | 150 | 3 | - |
| Church of the Holy Apostles | Waukegan, IL | 150 | 2 | - |
| Richardson Electronics Ltd | Lafox, IL | 150 | 645 | - |
| R&r Crossing Saloon | Waukegan, IL | 150 | 1 | - |
| Christ Mission Lutheran Church | Manhattan, IL | 150 | 3,123 | - |
| Mutiny Boat Club Camp Area | Antioch, IL | 150 | 22 | - |
| American Legion Post #13 | Plainfield, IL | 150 | 0 | - |
| Crow Valley Campground | Sterling, IL | 150 | 17 | - |
| The Pier | Lawrenceville, IL | 150 | 3 | - |
| Mobil Gas Station (116558) | Joliet, IL | 150 | 5 | - |
| Morrison Rockwood St Park-Equestrian | Morrison, IL | 150 | 8 | - |
| Speedway Lincoln Highway | New Lenox, IL | 150 | 6 | - |
| Road Ranger LLC Ottawa | Rockford, IL | 150 | 10 | - |
| Spring Valley Reformed Church | Fulton, IL | 150 | 8 | - |
| Gordon Hannagan Auction Co | Gifford, IL | 150 | 5 | - |
| Farmington Sportsmens Club | Elmwood, IL | 150 | 14 | - |
| Lighthouse Fellowship | Frakfort, IL | 150 | 98 | - |
| New Milford Express | Rockford, IL | 150 | 13 | - |
| St Pauls Luthern Church | Manito, IL | 150 | 16 | - |
| St Peter Lutheran Church (131946) | Virginia, IL | 150 | 13 | - |
| Eagle Crest Campground-Campground Well | Washburn, IL | 150 | 22 | - |
| Bloomington First Church | Bloomington, IL | 150 | 7 | - |
| Oakhurst Forest Preserve | Geneva, IL | 150 | 10 | - |
| Boone Creek Golf Club | McHenry, IL | 150 | 0 | - |
| Midwest Sports Complex | Mossville, IL | 150 | 3 | - |
| Incobrasa Industries | Le Roy, IL | 150 | 95 | - |
| Iglesia Bautista Gran Comision | Waukegan, IL | 150 | 1 | - |
| Jewel New Lenox | Vista, IL | 150 | 0 | - |
| Meijer #182 | Winston-Salem, IL | 150 | 0 | - |
| Forest Hills Diamonds | Loves Park, IL | 150 | 39 | - |
| Barbara Rose Elementary School | Naperville, IL | 150 | 248 | - |
| Hari Om Temple | Medinah, IL | 150 | 0 | - |
| Mark Hall | Aurora, IL | 150 | 0 | - |
| Faith United Reformed Church | Joliet, IL | 150 | 0 | - |
| St George Coptic Orthodox Church | Joliet, IL | 150 | 0 | - |