Public Water Systems
3,967 active public water systems in IN, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
| Woodside Amish School | Lagrange, IN | 39 | 12 | - |
| Forks Valley Amish School | Middlebury, IN | 39 | 35 | - |
| Kankakee Valley Remc | Wanatah, IN | 39 | 0 | - |
| Laporte County Library - Hanna | Laporte, IN | 39 | 3 | - |
| Constructive Pathways Montessori Presch | Michigan City, IN | 39 | 29 | - |
| The Dental Center | Granger, IN | 39 | 45 | - |
| Lake Shafer Marina | Monticello, IN | 39 | 30 | - |
| Riley Resort Land Trust | Pierceton, IN | 39 | 271 | - |
| Brookside Amish School | Geneva, IN | 38 | 21 | - |
| West Wabash Amish School | Geneva, IN | 38 | 62 | - |
| Thorntree Lake MHP & Campground LLC | Indianapolis, IN | 38 | 27 | - |
| Prairie Creek Garage Area | Selma, IN | 38 | 31 | - |
| Delaware Community School Corporation | Muncie, IN | 38 | 68 | - |
| Birdsong Echoes Amish School | Middlebury, IN | 38 | 75 | - |
| Smoker Craft Bldg. #11/12 | New Paris, IN | 38 | 102 | - |
| Etna Acres Golf Club | Andrews, IN | 38 | 39 | - |
| Sunny Ridge Amish School | Millersburg, IN | 38 | 79 | - |
| West Yoder Amish School | Shipshewana, IN | 38 | 80 | - |
| Creekside Amish School | Lagrange, IN | 38 | 7 | - |
| Waters Edge Condo Association | Cedar Lake, IN | 38 | 19 | - |
| Dwk Inc D/B/a White Horse Saloon | Westville, IN | 38 | 342 | - |
| Emmanuel Lutheran Church | Albion, IN | 38 | 77 | - |
| Sunny Slope Amish School | Ligonier, IN | 38 | 87 | - |
| Pond View Golf Course | Star City, IN | 38 | 44 | - |
| Rehoboth Church Inc. | Parker City, IN | 38 | 29 | - |
| Jericho Friends Church | Winchester, IN | 38 | 27 | - |
| Buckeye Terminals, LLC | Crown Point, IN | 38 | 47 | - |
| Indiana Crop Improvement Association Inc | Lafayette, IN | 38 | 10 | - |
| Purdue University Animal Research Center | West Lafayette, IN | 38 | 3 | - |
| St Jude Village Water Corporation | Connersville, IN | 38 | 30 | - |
| Twin Oak Amish School | Bryant, IN | 37 | 18 | - |
| New Process Steel | Butler, IN | 37 | 43 | - |
| Superior Wood Products | Warsaw, IN | 37 | 21 | - |
| Composite Designs, Inc. | Leesburg, IN | 37 | 12 | - |
| Worthington Ag Parts | Leesburg, IN | 37 | 32 | - |
| Tippy Creek Winery | Leesburg, IN | 37 | 20 | - |
| Hidden View Amish School | Nappanee, IN | 37 | 2 | - |
| Animal Hospital of Syracuse | Syracuse, IN | 37 | 21 | - |
| Seybert Trail Amish School | Shipshewana, IN | 37 | 19 | - |
| Andersen Trail Amish School | Lagrange, IN | 37 | 0 | - |
| Sunny Echoes Amish School | Topeka, IN | 37 | 0 | - |
| Blue Ridge Amish School | Shipshewana, IN | 37 | 40 | - |
| Corkys Dogg House | Cedar Lake, IN | 37 | 72 | - |
| Heston Hills Banquet/Conference Center | Laporte, IN | 37 | 35 | - |
| Muncie RV Resort, LLC | Anderson, IN | 37 | 25 | - |
| Joyful Echoes Amish School | Bremen, IN | 37 | 4 | - |
| American Legion Post #502 | Valparaiso, IN | 37 | 30 | - |
| Moss Creek Golf Course | Winamac, IN | 37 | 72 | - |
| Walnut Ridge Park | Greencastle, IN | 37 | 54 | - |
| American Inn | Angola, IN | 37 | 130 | - |