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 |
|---|---|---|---|---|
| Lowden Water Supply | Lowden, IA | 807 | 14 | - |
| Schleswig Munic Water Supply | Schleswig, IA | 803 | 158 | - |
| Ossian Water Supply | Ossian, IA | 802 | 13 | - |
| Prestage Foods of Iowa | Eagle Grove, IA | 800 | 6 | - |
| Gladbrook Water Supply | Gladbrook, IA | 799 | 48 | - |
| Gilbertville Water Works | Gilbertville, IA | 794 | 57 | - |
| West Bend Water Department | West Bend, IA | 791 | 40 | - |
| Milo Public Water Supply | Milo, IA | 788 | 115 | - |
| Wall Lake Water Supply | Wall Lake, IA | 780 | 40 | - |
| Van Horne Water Works | Van Horne, IA | 779 | 53 | - |
| Ruthven Water Supply | Ruthven, IA | 779 | 8 | - |
| Crescent Water Supply | Marshalltown, IA | 778 | 68 | - |
| Wheatland City Water Supply | Wheatland, IA | 775 | 69 | - |
| Freeport Water District | Decorah, IA | 775 | 7 | - |
| Dayton Municipal Water Supply | Fort Dodge, IA | 772 | 35 | - |
| Dakota City Water Supply | Dakota City, IA | 769 | 26 | - |
| Okoboji Water Supply | Okoboji, IA | 768 | 6 | Detected |
| Walnut Municipal Utilities | Walnut, IA | 768 | 40 | - |
| Carson Water Supply | Carson, IA | 766 | 51 | - |
| Correctionville Water Supply | Correctionville, IA | 766 | 28 | - |
| Melbourne Water Supply | Melbourne, IA | 765 | 18 | - |
| Exira Water Dept | Exira, IA | 764 | 33 | - |
| Garnavillo Water Supply | Garnavillo, IA | 763 | 31 | - |
| Alden Water Supply | Alden, IA | 763 | 37 | - |
| Rockford Water Supply | Rockford, IA | 762 | 28 | - |
| Western Hills (Mobile) Estates | Grinnell, IA | 760 | 177 | - |
| Ssab Iowa Inc | Muscatine, IA | 760 | 15 | - |
| Manilla Muni Service Dept | Manilla, IA | 758 | 42 | - |
| Morning Sun Water Department | Morning Sun, IA | 752 | 127 | - |
| McGregor Water Dept | McGregor, IA | 747 | 4 | - |
| Redfield Water Works | Redfield, IA | 744 | 53 | - |
| Starmont Community School District | Arlington, IA | 742 | 188 | - |
| Blairstown Water Supply | Blairstown, IA | 738 | 54 | - |
| Montrose Water Works | Montrose, IA | 738 | 33 | - |
| Schaller Water Supply | Schaller, IA | 729 | 45 | - |
| Hedrick Water Supply | Hedrick, IA | 728 | 37 | - |
| Whiting Water Supply | Whiting, IA | 727 | 19 | - |
| Shelby Water Supply | Shelby, IA | 727 | 77 | - |
| Grand Jct Municipal Water Dept | Grand Junction, IA | 725 | 22 | - |
| Earlville Muni Water Supply | Earlville, IA | 724 | 147 | - |
| North Linn High School / Middle School | Troy Mills, IA | 724 | 55 | - |
| Oxford Water Supply | Oxford, IA | 722 | 127 | - |
| Essex Water Supply | Essex, IA | 722 | 154 | - |
| Wellsburg Water Supply | Wellsburg, IA | 721 | 122 | - |
| Pikes Peak State Park-Campground | McGregor, IA | 720 | 68 | - |
| Hospers Municipal Water Dept | Hospers, IA | 718 | 29 | - |
| Merrill Municipal Water Supply | Merrill, IA | 717 | 291 | - |
| Ventura Water Works | Ventura, IA | 716 | 10 | - |
| Equistar Chemicals LP | Clinton, IA | 715 | 44 | - |
| Caseys #3449 | Muscatine, IA | 715 | 50 | - |