All water systems in Iowa
1,804 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Epworth Water Supply Epworth · Dubuque County |
2,023 | 0 | 0 | |
|
Parkersburg Water Supply Parkersburg · Butler County |
2,019 | 0 | 0 | |
|
Monroe Water Supply Monroe · Jasper County |
2,007 | 0 | 0 | |
|
Sigourney Muni Water Works Sigourney · Keokuk County |
2,004 | 0 | 0 | |
|
Poweshiek Water Association (cr) Norway · Benton County |
2,000 | 0 | 0 | |
|
Wapello Municipal Water Works Wapello · Louisa County |
1,977 | 0 | 0 | |
|
Denver Water Supply Denver · Bremer County |
1,919 | 0 | 0 | |
|
New London Munic Water Dept New London · Henry County |
1,910 | 0 | 0 | |
|
Dallas Center Water Supply Dallas Center · Dallas County |
1,901 | 1 | 0 | |
|
Flying J NO 572 Williams · Hamilton County |
1,892 | 0 | 0 | |
|
Pocahontas Water Department Pocahontas · Pocahontas County |
1,877 | 0 | 0 | |
|
Durant Water Supply Durant · Cedar County |
1,871 | 0 | 0 | |
|
Columbus Junction Water Supply Columbus Junction · Louisa County |
1,830 | 0 | 0 | |
|
Leon Water Supply Leon · Decatur County |
1,830 | 1 | 0 | |
|
Guttenberg Water Utility Guttenberg · Clayton County |
1,817 | 0 | 0 | |
|
Stuart Water Supply Stuart · Adair County |
1,814 | 0 | 0 | |
|
Park View Village Grimes · Polk County |
1,800 | 1 | 0 | |
|
Truckomat Corporation Walcott · Scott County |
1,794 | 0 | 0 | |
|
Farley Water Supply Farley · Dubuque County |
1,766 | 1 | 0 | |
|
Lyon-Sioux Rws-Doon Doon · Lyon County |
1,765 | 0 | 0 | |
|
Ponderosa Utilities Inc. Montezuma · Poweshiek County |
1,750 | 0 | 0 | |
|
Corning Muni Water Department Corning · Adams County |
1,735 | 1 | 0 | |
|
Lake City Water Supply Lake City · Calhoun County |
1,731 | 1 | 0 | |
|
Manson Water Supply Manson · Calhoun County |
1,727 | 2 | 1 | |
|
West Central Rwa-Boyer System Wall Lake · Sac County |
1,715 | 0 | 0 | |
|
Sirwa #1 (greenfield) Greenfield · Adair County |
1,712 | 0 | 0 | |
|
Prairie City Water Works Prairie City · Jasper County |
1,703 | 0 | 0 | |
|
Avoca Water Works Avoca · Pottawattamie County |
1,697 | 0 | 0 | |
|
Mediapolis Water Supply Mediapolis · Des Moines County |
1,688 | 0 | 0 | |
|
Moville Water Supply Moville · Woodbury County |
1,687 | 0 | 0 | |
|
Mount Ayr Water Treatment Plant Mount Ayr · Ringgold County |
1,683 | 0 | 0 | |
|
Remsen Municipal Utilities Remsen · Plymouth County |
1,678 | 0 | 0 | |
|
Pleasantville Water Works Pleasantville · Marion County |
1,676 | 0 | 0 | |
|
Reinbeck Water Supply Reinbeck · Grundy County |
1,662 | 1 | 0 | |
|
Granger Muni Water Supply Granger · Dallas County |
1,654 | 2 | 1 | |
|
Xenia Rwd (madrid) Madrid · Boone County |
1,635 | 0 | 0 | |
|
Woodbine Water Department Woodbine · Harrison County |
1,625 | 1 | 0 | |
|
Corydon Water Supply Corydon · Wayne County |
1,610 | 0 | 0 | |
|
Hartley Municipal Water Department Hartley · O'Brien County |
1,605 | 0 | 0 | |
|
Ackley Municipal Water Works Ackley · Hardin County |
1,599 | 1 | 0 | |
|
Guthrie Center Muni Water Work Guthrie Center · Guthrie County |
1,593 | 0 | 0 | |
|
Traer Municipal Water Plant Traer · Tama County |
1,583 | 2 | 0 | |
|
Winnavegas Casino County |
1,576 | 2 | 0 | |
|
Urbana Water Supply Urbana · Benton County |
1,562 | 0 | 0 | |
|
Akron, City of Akron · Plymouth County |
1,558 | 1 | 1 | |
|
Urban Bluffs North Council Bluffs · Pottawattamie County |
1,558 | 1 | 0 | |
|
Nashua Water Supply Nashua · Chickasaw County |
1,551 | 0 | 0 | |
|
Walcott Waterworks Walcott · Scott County |
1,551 | 1 | 0 | |
|
Slater Muni Water Dept Slater · Story County |
1,548 | 2 | 1 | |
|
Montezuma Muni Water Supply Montezuma · Poweshiek County |
1,545 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules still in violation at EPA's latest data refresh.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Iowa records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.