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 |
|---|---|---|---|---|
| Karnak | Karnak, IL | 432 | 45 | - |
| Reed School | Lockport, IL | 431 | 243 | - |
| Sorento | Aviston, IL | 429 | 163 | - |
| Hecker | Hecker, IL | 429 | 51 | - |
| Neponset | Neponset, IL | 427 | 1,195 | - |
| Sublette | Sublette, IL | 426 | 30 | - |
| Prairie City | Prairie City, IL | 425 | 152 | - |
| Bay View Baptist Church | Washington, IL | 425 | 5 | - |
| New Haven | New Haven, IL | 424 | 41 | - |
| Candlelight Village MHP | Farmington Hills, IL | 420 | 96 | - |
| Ogden Gardens Subdivision | Aurora, IL | 420 | 39 | - |
| Hopewell | Hopewell, IL | 420 | 381 | - |
| Oakwood Estates | Springfield, IL | 420 | 9 | - |
| Arenzville | Arenzville, IL | 419 | 66 | - |
| Campbell Hill | Campbell Hill, IL | 414 | 31 | - |
| Hilldale Manor Subdivision | Fox Lake, IL | 414 | 20 | - |
| White Oaks Estates Water Assoc., Inc. | Dixon, IL | 410 | 26 | - |
| Midland High School | Varna, IL | 410 | 314 | - |
| Springbrook Community Church | Plainfield, IL | 406 | 8 | - |
| Des Plaines MHP | Desplaines, IL | 405 | 148 | - |
| Weldon | Weldon, IL | 404 | 43 | - |
| Cass Rural Water District | Arenzville, IL | 403 | 0 | - |
| Leaf River | Leaf River, IL | 403 | 20 | - |
| Ellis Grove | Ellis Grove, IL | 403 | 79 | - |
| IL Veterans Home (Quincy) | Quincy, IL | 401 | 16 | - |
| Benson | Benson, IL | 401 | 130 | - |
| Hobson Valley Water System | Darien, IL | 400 | 2 | - |
| Allendale Association | Lake Villa, IL | 400 | 37 | - |
| Rock River Estates MHP | Dixon, IL | 400 | 26 | - |
| Balmoral Heights Subdivision | Crete, IL | 400 | 11 | - |
| Greenwood School | Woodstock, IL | 400 | 66 | - |
| Illinois Turner Camp Pool | Algonquin, IL | 400 | 26 | - |
| St Matthew Lutheran School | Lake Zurich, IL | 400 | 10 | - |
| Millburn School | Twin Lakes, IL | 400 | 270 | - |
| Titan Tire Coorporation of Freeport | Freeport, IL | 400 | 118 | - |
| Peoria Skeet & Trap Club | East Peoria, IL | 400 | 3 | - |
| Sycamore Speedway | Maple Park, IL | 400 | 24 | - |
| Hinckley-Big Rock Middle School | Deklab, IL | 400 | 513 | - |
| Goodenow Grove Forest Preserve | West Chicago, IL | 400 | 1 | - |
| Schiller Woods W 3072 | Maywood, IL | 400 | 11 | - |
| Schiller Woods 3102 | Maywood, IL | 400 | 8 | - |
| Grace Christian Academy | Kankakee, IL | 400 | 1,347 | - |
| Schiller Woods 3070 | Maywood, IL | 400 | 20 | - |
| Tampier Lake 5321 | Maywood, IL | 400 | 14 | - |
| Lindenhurst Clark | Waukegan, IL | 400 | 2 | - |
| Coghill Golf Courses #2&4 | Lemont, IL | 400 | 8 | - |
| Ed Etnyre and Company | Oregon, IL | 400 | 125 | - |
| Tamarack Golf Club Ltd | Naperville, IL | 400 | 0 | - |
| Express Lane Gas and Food Inc. | Morris, IL | 400 | 10 | - |
| Brunswick Deer Park Lanes | Waukegan, IL | 400 | 0 | - |