waterbycounty

Iowa Water Quality

Drinking water data for all 99 counties.

Avg Water Score

99.9

State Grade

A

Counties with Data

99

of 99 total

All Iowa Counties

CountyWater Score
Adair County100.0
Adams County100.0
Allamakee County100.0
Appanoose County100.0
Audubon County100.0
Black Hawk County100.0
Bremer County100.0
Buchanan County100.0
Buena Vista County100.0
Cerro Gordo County100.0
Cherokee County100.0
Clay County100.0
Clayton County100.0
Clinton County100.0
Crawford County100.0
Dallas County100.0
Davis County100.0
Delaware County100.0
Des Moines County100.0
Dubuque County100.0
Emmet County100.0
Fayette County100.0
Floyd County100.0
Franklin County100.0
Fremont County100.0
Greene County100.0
Grundy County100.0
Hamilton County100.0
Hardin County100.0
Harrison County100.0
Henry County100.0
Howard County100.0
Humboldt County100.0
Ida County100.0
Jackson County100.0
Jasper County100.0
Jefferson County100.0
Keokuk County100.0
Kossuth County100.0
Lee County100.0
Linn County100.0
Louisa County100.0
Lucas County100.0
Lyon County100.0
Madison County100.0
Mahaska County100.0
Marion County100.0
Marshall County100.0
Mitchell County100.0
Monona County100.0
Monroe County100.0
Montgomery County100.0
Muscatine County100.0
O'Brien County100.0
Osceola County100.0
Page County100.0
Plymouth County100.0
Polk County100.0
Pottawattamie County100.0
Ringgold County100.0
Scott County100.0
Shelby County100.0
Sioux County100.0
Story County100.0
Tama County100.0
Taylor County100.0
Union County100.0
Van Buren County100.0
Wapello County100.0
Warren County100.0
Washington County100.0
Wayne County100.0
Winnebago County100.0
Winneshiek County100.0
Woodbury County100.0
Worth County100.0
Wright County100.0
Boone County99.9
Chickasaw County99.9
Dickinson County99.9
Jones County99.9
Benton County99.8
Cedar County99.8
Clarke County99.8
Hancock County99.8
Johnson County99.8
Pocahontas County99.8
Webster County99.8
Butler County99.7
Guthrie County99.7
Cass County99.6
Carroll County99.3
Sac County99.3
Poweshiek County99.0
Palo Alto County98.9
Calhoun County98.7
Decatur County98.7
Iowa County98.7
Mills County98.6

Concerned about your water quality?

Berkey water filters remove contaminants at home.

Shop Filters →

Sponsored

Data Source

Water quality data sourced from the EPA Safe Drinking Water Information System (SDWIS) via the ECHO enforcement database. Scores reflect compliance history and health-based violation counts.

Disclaimer: This data is informational only. It is not health, legal, or professional advice. For concerns about your specific water supply, contact your local water utility.

← Back to All States

Explore more data for Iowa

Property TaxCost of LivingComing SoonCrime RateIncomeComing SoonHealthSchoolsNatural Disaster RiskWeatherCounty Score