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 |
| Oyens Water Supply | Remsen, IA | 92 | 109 | - |
| Hazleton Mobile Home Park | Hazleton, IA | 90 | 9 | - |
| St Pauls Maple Leaf Lutheran Church | Lime Springs, IA | 90 | 8 | - |
| Waldenburg Community Water System | Oxford, IA | 90 | 78 | - |
| Hidden Acres Subdivision | Solon, IA | 90 | 215 | - |
| River Road Golf Club | Algona, IA | 90 | 153 | - |
| Twin Knolls Fourth/Fifth Addition | Cedar Rapids, IA | 90 | 165 | - |
| Hole N the Wall Lodge | Akron, IA | 90 | 40 | - |
| The Learning Journey | Council Bluffs, IA | 90 | 12 | - |
| Rausch Cafe | Guttenberg, IA | 89 | 46 | - |
| Penn Center Inc | Delhi, IA | 89 | 87 | - |
| Corporation of New Melleray | Peosta, IA | 89 | 86 | - |
| Stringtown Grocery | Kalona, IA | 89 | 97 | - |
| Valley View Estates #1 and #2 | Muscatine, IA | 89 | 237 | - |
| Creighton University Retreat Center | Griswold, IA | 89 | 16 | - |
| Oak Ridge Lake Estates | Cedar Rapids, IA | 88 | 138 | - |
| Mount Vernon Community Bible Church | Mount Vernon, IA | 88 | 132 | - |
| Silvercrest Golf & Country Club, Inc. | Decorah, IA | 88 | 230 | - |
| Round Grove Golf & Country Club | Greene, IA | 87 | 97 | - |
| Pilot Travel Center #496 | Davenport, IA | 87 | 56 | - |
| Desoto Bend Mini Mart | Missouri Valley, IA | 87 | 57 | - |
| Mecha Ceba Water System Association | Muscatine, IA | 87 | 71 | - |
| Dubuque Shooting Society | Dubuque, IA | 85 | 56 | - |
| Chase Mobile Home Park | Iowa Falls, IA | 85 | 28 | - |
| The Twisted Tail | Logan, IA | 85 | 4 | - |
| Makada Homeowners Association | Iowa City, IA | 85 | 151 | - |
| Wapsipinicon Country Club | Anamosa, IA | 85 | 203 | - |
| Carlton Mobile Home Court | Springville, IA | 85 | 42 | - |
| West Post Estates Addition | Cedar Rapids, IA | 85 | 21 | - |
| Trout Valley 2nd Addition | Leclaire, IA | 85 | 112 | - |
| McCarty Creek Homeowners Assn #8 | Leclaire, IA | 85 | 62 | - |
| Osborne Outdoor Education Center | Elkader, IA | 84 | 71 | - |
| Rhodys | Dubuque, IA | 84 | 133 | - |
| Lyn-Den Heights Homeowners Assoc. | Oxford, IA | 84 | 113 | - |
| Family Church | Iowa City, IA | 84 | 0 | - |
| Jacobs Landing HOA | Muscatine, IA | 84 | 2 | - |
| Raccoon River Bible Camp | Scranton, IA | 83 | 50 | - |
| Timber Lake Estates HOA | Blue Grass, IA | 83 | 9 | - |
| Hilltop Village Mhc, Inc. | Newell, IA | 82 | 124 | - |
| Hampton Country Club | Hampton, IA | 82 | 50 | - |
| Hansell Water Department | State Center, IA | 82 | 53 | - |
| Humboldt Country Club | Humboldt, IA | 82 | 151 | - |
| Twisters Gymnastics Inc | Cedar Rapids, IA | 82 | 21 | - |
| P & K Midwest (Mt Vernon) | Oxford, IA | 82 | 28 | - |
| Ralston Water Treatment Plant | Glidden, IA | 81 | 91 | - |
| Lime Creek Conservation Area | Mason City, IA | 81 | 19 | - |
| Bacon Addition | Monticello, IA | 81 | 71 | - |
| Word of Faith Dominion Church | Lake Mills, IA | 81 | 95 | - |
| Church of Jesus Christ of Lds (Atlantic) | Metamora, IA | 80 | 172 | - |
| Rock Falls Lounge | Manly, IA | 80 | 187 | - |