State
Iowa: drinking water records
EPA lists 1,078 community water systems serving homes in Iowa. 151 took part in EPA's national PFAS survey (UCMR 5), and 32 found at least one PFAS above the level laboratories can measure.
In focus1,078community water systems
Public records. Clearer context.
0
ZIP reports published
1,078
community water systems
90
systems with a health-based violation since 2016
38
systems that reached the lead action level since 2016
Counties
- Adair County 7 systems
- Adams County 3 systems
- Allamakee County 4 systems
- Appanoose County 6 systems
- Audubon County 4 systems
- Benton County 17 systems
- Black Hawk County 11 systems
- Boone County 12 systems
- Bremer County 10 systems
- Buchanan County 11 systems
- Buena Vista County 12 systems
- Butler County 10 systems
- Calhoun County 12 systems
- Carroll County 13 systems
- Cass County 8 systems
- Cedar County 13 systems
- Cerro Gordo County 9 systems
- Cherokee County 11 systems
- Chickasaw County 6 systems
- Clarke County 4 systems
- Clay County 6 systems
- Clayton County 16 systems
- Clinton County 16 systems
- Crawford County 11 systems
- Dallas County 20 systems
- Davis County 3 systems
- Decatur County 6 systems
- Delaware County 8 systems
- Des Moines County 8 systems
- Dickinson County 10 systems
- Dubuque County 30 systems
- Emmet County 7 systems
- Fayette County 11 systems
- Floyd County 7 systems
- Franklin County 9 systems
- Fremont County 7 systems
- Greene County 6 systems
- Grundy County 9 systems
- Guthrie County 7 systems
- Hamilton County 9 systems
- Hancock County 8 systems
- Hardin County 12 systems
- Harrison County 11 systems
- Henry County 11 systems
- Howard County 6 systems
- Humboldt County 8 systems
- Ida County 5 systems
- Iowa County 11 systems
- Jackson County 10 systems
- Jasper County 11 systems
- Jefferson County 9 systems
- Johnson County 74 systems
- Jones County 11 systems
- Keokuk County 11 systems
- Kossuth County 15 systems
- Lee County 6 systems
- Linn County 40 systems
- Louisa County 8 systems
- Lucas County 3 systems
- Lyon County 12 systems
- Madison County 5 systems
- Mahaska County 4 systems
- Marion County 13 systems
- Marshall County 13 systems
- Mills County 8 systems
- Mitchell County 6 systems
- Monona County 8 systems
- Monroe County 3 systems
- Montgomery County 4 systems
- Muscatine County 20 systems
- O'Brien County 7 systems
- Osceola County 7 systems
- Page County 9 systems
- Palo Alto County 7 systems
- Plymouth County 10 systems
- Pocahontas County 9 systems
- Polk County 36 systems
- Pottawattamie County 15 systems
- Poweshiek County 8 systems
- Ringgold County 4 systems
- Sac County 8 systems
- Scott County 48 systems
- Shelby County 9 systems
- Sioux County 16 systems
- Story County 20 systems
- Tama County 12 systems
- Taylor County 4 systems
- Union County 2 systems
- Van Buren County 8 systems
- Wapello County 6 systems
- Warren County 14 systems
- Washington County 14 systems
- Wayne County 6 systems
- Webster County 24 systems
- Winnebago County 7 systems
- Winneshiek County 13 systems
- Woodbury County 17 systems
- Worth County 7 systems
- Wright County 7 systems
ZIP reports
Sources
EPA UCMR 5 occurrence data, samples collected 2023-01-03 – 2026-06-17, final release, August 2026 (file dated Aug 28, 2026); EPA SDWIS via ECHO, 2026Q2 extract (file dated Jul 9, 2026); EPA service-area boundaries v3.0; Census 2020 ZCTAs. Page generated 2026-09-03.