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 |
| Craig Welding & Manufacturing, Inc. | Mentone, IN | 40 | 65 | - |
| Hoosier Hideaway East | Kewanna, IN | 40 | 103 | - |
| Smoker Craft Bldg. #17 | New Paris, IN | 40 | 0 | - |
| Twin Lakes Campground - Bath House | Hillsboro, IN | 40 | 68 | - |
| Lakeview Campground | Rochester, IN | 40 | 12 | - |
| New Palestine Christian Church | New Palestine, IN | 40 | 17 | - |
| Currys Chapel | Greenfield, IN | 40 | 117 | - |
| Calvary Bible Methodist Church | Greenfield, IN | 40 | 39 | - |
| Seventh Day Adventist Church | Kokomo, IN | 40 | 106 | - |
| Roush Lake Huntington Res North Ramp | Huntington, IN | 40 | 0 | - |
| DNR - J. Edward Roush Lake Firing Range | Huntington, IN | 40 | 7 | - |
| Ratcliff Grove Christian Church | Brownstown, IN | 40 | 258 | - |
| New Covenant Fellowship Church | Bryant, IN | 40 | 44 | - |
| Shiloh Community Church | Franklin, IN | 40 | 69 | - |
| Hope Baptist Church | Warsaw, IN | 40 | 0 | - |
| Texmo Precision Castings | Warsaw, IN | 40 | 45 | - |
| The Lodge at North Webster | Mendon, IN | 40 | 247 | - |
| Griffiths Wawasee Marina | Syracuse, IN | 40 | 34 | - |
| Pine Grove Amish Parochial School | Etna Green, IN | 40 | 0 | - |
| Atwood Christian Fellowship | Pierceton, IN | 40 | 11 | - |
| Kerlin Motor Co. | Silver Lake, IN | 40 | 70 | - |
| Community Bible Church of Warsaw | Warsaw, IN | 40 | 48 | - |
| Brookside Amish School | Middlebury, IN | 40 | 28 | - |
| Hidden Cove Amish School | Shipshewana, IN | 40 | 7 | - |
| Golden Acres Amish School | Lagrange, IN | 40 | 4 | - |
| Meadow Brook Amish School | Lagrange, IN | 40 | 0 | - |
| Pleasant Acres Amish School | Lagrange, IN | 40 | 29 | - |
| Little Acorn Amish School | Lagrange, IN | 40 | 19 | - |
| Middle Barrens Amish School | Middlebury, IN | 40 | 30 | - |
| Meadow Lane Amish School | Lagrange, IN | 40 | 18 | - |
| Eddy Village Amish School | Wolcottville, IN | 40 | 8 | - |
| Lucys Vedie Twist | Lagrange, IN | 40 | 44 | - |
| Franks Backyard BBQ | Cedar Lake, IN | 40 | 29 | - |
| Elevator 23 | Cedar Lake, IN | 40 | 0 | - |
| Les & Pearls | Union Mills, IN | 40 | 12 | - |
| Sauktown Church of Christ, Inc. | Mill Creek, IN | 40 | 19 | - |
| Hensley Fabricating & Equipment | Tippecanoe, IN | 40 | 23 | - |
| Rentown Variety Store | Bremen, IN | 40 | 3 | - |
| Sellers Service Inc | Rochester, IN | 40 | 4 | - |
| Digger Specialties Corporate Office | Bremen, IN | 40 | 3 | - |
| Bourbon Travel Plaza | Bourbon, IN | 40 | 846 | - |
| Church of Hope, Inc. | Amboy, IN | 40 | 0 | - |
| Miami Trucking, Inc. | Peru, IN | 40 | 0 | - |
| Honey Bear Hollow Family Campground | Peru, IN | 40 | 31 | - |
| Standard Forwarding LLC | Crawfordsville, IN | 40 | 117 | - |
| Lake Waveland Park - Modern Camp | Waveland, IN | 40 | 180 | - |
| Nature Hill Amish School | Ligonier, IN | 40 | 17 | - |
| Goss Grocery | Columbia City, IN | 40 | 30 | - |
| Merry Lea Learning Center | Albion, IN | 40 | 3 | - |
| Otterbein Church | Rockville, IN | 40 | 100 | - |