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 |
| McKinley Woods | West Chicago, IL | 25 | 2 | - |
| New Lenox Sportsmans Club | Wilmington, IL | 25 | 36 | - |
| New Lenox Sportsmans Club (22285) | Wilmington, IL | 25 | 36 | - |
| The Anchor Pointe Marina | Antioch, IL | 25 | 0 | - |
| Sandbar & Grill, Inc. | Antioch, IL | 25 | 4 | - |
| Captains Quarters (23358) | Waukegan, IL | 25 | 0 | - |
| Hickory Knoll Golf Course | Lake Villa, IL | 25 | 0 | - |
| Norsthore II Restaurant | Antioch, IL | 25 | 0 | - |
| Mansard Plaza | Waukegan, IL | 25 | 89 | - |
| Big Fran's Bar & Grill | Johnsburg, IL | 25 | 3 | - |
| Area #1 Outdoor Club | West Chicago, IL | 25 | 23 | - |
| Glacial Park Picnic Area | Woodstock, IL | 25 | 4 | - |
| Marengo Ridge (26583) | West Chicago, IL | 25 | 10 | - |
| Collier RV Sky Harbor | Waukegan, IL | 25 | 0 | - |
| Montessori School of Long Grove | Long Grove, IL | 25 | 98 | - |
| Rush Creek Conservation Area (28043) | West Chicago, IL | 25 | 5 | - |
| Rush Creek Conservation Area (28209) | West Chicago, IL | 25 | 5 | - |
| Best Friends American Pet Motel | Waukegan, IL | 25 | 1 | - |
| Honey Bee Restaurant | Waukegan, IL | 25 | 0 | - |
| Fox Ranch Tavern | Plano, IL | 25 | 92 | - |
| American Legion Post 489 | Yorkville, IL | 25 | 16 | - |
| Fenton United Methodist Church | Fenton, IL | 25 | 7 | - |
| Macomb Municipal Airport | Macomb, IL | 25 | 14 | - |
| Lgc Shady Lakes RV LLC | New Windsor, IL | 25 | 32 | - |
| Hidden Lake Campground | Taylor Ridge, IL | 25 | 18 | - |
| Lake Calhoun Association #5 | Galesburg, IL | 25 | 10 | - |
| Spring Lake Conservation Area (34702) | Manito, IL | 25 | 17 | - |
| Prophet Hills Country Club | Prophetstown, IL | 25 | 8 | - |
| Ridgewood Baptist Church Admy | Joliet, IL | 25 | 360 | - |
| Lindas Pizza | Joliet, IL | 25 | 1 | - |
| Weldon Springs Sp Office | Champaign, IL | 25 | 3 | - |
| Weldon Springs Sp Campgrnd | Champaign, IL | 25 | 28 | - |
| Altorfer Cat | Olgesby, IL | 25 | 103 | - |
| Severson Dells Fp Handpump | Rockford, IL | 25 | 5 | - |
| Winn Farm Bureau Riverview Fs | Rockford, IL | 25 | 13 | - |
| Eickmans Processing Company | Seward, IL | 25 | 0 | - |
| Gospel Life Church | Joliet, IL | 25 | 11 | - |
| Rustic Motel | Rockford, IL | 25 | 19 | - |
| Travlur Motel | Rockford, IL | 25 | 57 | - |
| Wtvo Tv | Rockford, IL | 25 | 409 | - |
| Wrex Tv | Rockford, IL | 25 | 380 | - |
| Rock-A-Bago Hall | Rockford, IL | 25 | 18 | - |
| Dolphin Harbor | Antioch, IL | 25 | 12 | - |
| Matthiessen State Park (52886) | Utica, IL | 25 | 7 | - |
| Castle Rock State Park - Old Orchard | Oregon, IL | 25 | 14 | - |
| Pekin Boat Club | Pekin, IL | 25 | 6 | - |
| Spring Lake Conservation Area (55905) | Manito, IL | 25 | 57 | - |
| The Cellar | Joliet, IL | 25 | 9 | - |
| East Joliet Aerie | Joliet, IL | 25 | 2 | - |
| Loud Thunder Maintenance Building | Illinois City, IL | 25 | 20 | - |