Public Water Systems
1,795 active public water systems in IA, tracked from EPA's Safe Drinking Water Information System (SDWIS) across all 50 states. See our methodology.
| System Name | Location | Population | Violations | PFAS |
| Pilot Knob State Park-Campground | Forest City, IA | 50 | 31 | - |
| Burr Oak Lutheran Church | Decorah, IA | 50 | 30 | - |
| Kendallville Park | Ft Atkinson, IA | 50 | 47 | - |
| Bodensteiner Implement Company | Decorah, IA | 50 | 37 | - |
| Decorah Fish Hatchery | Decorah, IA | 50 | 19 | - |
| Hwh Corporation (West) | Moscow, IA | 50 | 80 | - |
| Becker Drive Road & Well, LLC | Humboldt, IA | 50 | 35 | - |
| Ag Processing - Refinery | Sergeant Bluff, IA | 50 | 7 | - |
| Allamakee Co Public Safety Center | Waukon, IA | 49 | 60 | - |
| Ziegler Cat (Mason City) | Mason City, IA | 49 | 45 | - |
| Nutrien Ag Solutions | Dunlap, IA | 49 | 6 | - |
| Ag Processing Inc - Algona | Algona, IA | 49 | 4 | - |
| Rocky Knoll MHP | Leland, IA | 49 | 502 | - |
| Grandview Circle Water Association | Clear Lake, IA | 48 | 29 | - |
| Vern Laures Auto Center Inc | New Hampton, IA | 48 | 260 | - |
| Scherrmanns Implement and Appliance Inc | Dyersville, IA | 48 | 169 | - |
| Pine Grove Mennonite School | Chester, IA | 48 | 65 | - |
| Redwing Estates HOA | Oxford, IA | 48 | 78 | - |
| Timberlane Water Association | Fort Dodge, IA | 48 | 212 | - |
| Eagle Hills | Algona, IA | 47 | 140 | - |
| 2nd Pleasant View Subdivision | Fort Myers, IA | 47 | 134 | - |
| Hartman Riverside Camp #1 | Prairie Du Chien, IA | 46 | 118 | - |
| Finleys Landing | Peosta, IA | 46 | 34 | - |
| Regency West Subdivision | Dubuque, IA | 46 | 61 | - |
| Jj's Bar and Grill | Ackley, IA | 46 | 36 | - |
| Iowa Limestone Co | Alden, IA | 46 | 18 | - |
| Iowa Valley Estates | Marengo, IA | 46 | 121 | - |
| Nita Ho Valley Assoc | Bellevue, IA | 46 | 53 | - |
| Burr Oak Motel | Algona, IA | 46 | 32 | - |
| Murphy Family Farms - Feed Mill | Humboldt, IA | 46 | 58 | - |
| Louisa Co Law Enforcement Ctr | Muscatine, IA | 46 | 134 | - |
| Laura Ingalls Wilder Museum Well | Burr Oak, IA | 46 | 16 | - |
| Sportsmens Club (Rossville) | Farmersburg, IA | 45 | 52 | - |
| Walnut Street Well | Walford, IA | 45 | 21 | - |
| Little Bear Campground | Tipton, IA | 45 | 25 | - |
| Clayton Water Supply | Clayton, IA | 45 | 63 | - |
| Elkader Golf & Country Club | Elkader, IA | 45 | 176 | - |
| Miners Creek Hideaway | Maynard, IA | 45 | 50 | - |
| Creek Valley Campground | Dubuque, IA | 45 | 8 | - |
| Lemar Industries | Sheffield, IA | 45 | 8 | - |
| Eldred Sherwood Park | Garner, IA | 45 | 31 | - |
| Featherlite Manufacturing, Inc. | Cresco, IA | 45 | 87 | - |
| Lake Macbride Golf Course | Solon, IA | 45 | 93 | - |
| Saints Peter & Paul Lutheran Church | Monticello, IA | 45 | 165 | - |
| Windy Ridge Well Association | Oxford, IA | 45 | 60 | - |
| Troy Mills Christian Church | Troy Mills, IA | 45 | 0 | - |
| Hilltop Road Association #1 | Muscatine, IA | 45 | 148 | - |
| Quail Run Country Club | Neola, IA | 45 | 83 | - |
| Sunset Hills Estates Part 2 | Kalona, IA | 45 | 4 | - |
| Waldschmidt Subdivision | Iowa City, IA | 45 | 85 | - |