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 |
| Valley View Mobile Home Park | Ojai, IN | 50 | 1,044 | - |
| Hidden Valley Amish School | Berne, IN | 49 | 40 | - |
| Grace Community Church | Montpelier, IN | 49 | 68 | - |
| Hall Family Dentistry | Indianapolis, IN | 49 | 19 | - |
| B and J Specialties | Wawaka, IN | 49 | 22 | - |
| Parke County Remc | Rockville, IN | 49 | 2 | - |
| Metalstamp, Inc. | Mason, IN | 49 | 289 | - |
| Klink Trucking Inc. | Ashley, IN | 49 | 7 | - |
| Notre Dame Federal Credit Union | Notre Dame, IN | 49 | 4 | - |
| Valley Screen Process Company | Mishawaka, IN | 49 | 13 | - |
| American Electric Power-Honey Creek Farm | Rockport, IN | 49 | 8 | - |
| Leisure Acres Mobile Home Park | West Terre Haute, IN | 49 | 197 | - |
| Lift-A-Loft | Muncie, IN | 48 | 42 | - |
| Hillside Amish School | Goshen, IN | 48 | 45 | - |
| Pine Creek Amish School | Middlebury, IN | 48 | 8 | - |
| Stoney Creek Amish School | Millersburg, IN | 48 | 42 | - |
| Classic Stone LLC | Westfield, IN | 48 | 315 | - |
| The Oaks of Kokomo II | Zionsville, IN | 48 | 30 | - |
| Cornerview Amish School | Nappanee, IN | 48 | 17 | - |
| K & M Enterprises - Cosmo and Company | Warsaw, IN | 48 | 142 | - |
| Echo Bay Condominiums Association | North Webster, IN | 48 | 18 | - |
| Nature Valley Amish Parochial School | Lagrange, IN | 48 | 94 | - |
| Honeybrook Amish School | Topeka, IN | 48 | 56 | - |
| Valley Line Amish School | Shipshewana, IN | 48 | 0 | - |
| Super 8 Motel Dash Hospitality, Inc. | Hebron, IN | 48 | 17 | - |
| Laporte County Library - Rolling Prairie | Laporte, IN | 48 | 16 | - |
| Sterno Delivery | Laporte, IN | 48 | 63 | - |
| Lakeside RV Resort | New Carlisle, IN | 48 | 139 | - |
| Dubose Strapping Inc. | Crawfordsville, IN | 48 | 0 | - |
| Starz Academy #1, Inc-Little Starz | Osceola, IN | 48 | 507 | - |
| Trine State Rec Area (Pokagon St. Park) | Angola, IN | 48 | 15 | - |
| Blue Bird Bay Resort | Sandy, IN | 48 | 148 | - |
| Autumn Acres Subdivision | Yorktown, IN | 48 | 79 | - |
| Countryside Villas | Kokomo, IN | 48 | 464 | - |
| Lazy Oaks | Crown Point, IN | 48 | 287 | - |
| Salem Amish School | Monroe, IN | 47 | 27 | - |
| Demeter LLC & Dr. Kyle Sheets | Fowler, IN | 47 | 18 | - |
| Delivery Concepts, Inc - Plant 1 | Niles, IN | 47 | 2 | - |
| Forest Grove Amish School | Middlebury, IN | 47 | 10 | - |
| Thermo Dyne | Elkhart, IN | 47 | 192 | - |
| Christ Fellowship Church | Knightstown, IN | 47 | 24 | - |
| Warsaw Tennis and Fitness Club | Warsaw, IN | 47 | 85 | - |
| Foxwood Hills Community Assoc.-#1 | Leesburg, IN | 47 | 38 | - |
| Foxwood Hills Community Association-#2 | Middlebury, IN | 47 | 32 | - |
| Buck Creek Amish School | Lagrange, IN | 47 | 39 | - |
| Wolf Lake Baptist Church | Wolf Lake, IN | 47 | 31 | - |
| Northern Indiana Surgery Center | Granger, IN | 47 | 42 | - |
| Northport Mobile Home Park | Lagrange, IN | 47 | 10 | - |
| Clover Leaf Amish School | Goshen, IN | 46 | 53 | - |
| Las Adelitas Restaurant | Elkhart, IN | 46 | 69 | - |