All water systems in Iowa
1,804 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Springville Water Supply Springville · Linn County |
1,164 | 0 | 0 | |
|
ST Ansgar Water Supply Saint Ansgar · Mitchell County |
1,161 | 0 | 0 | |
|
Strawberry Point Water Supply Strawberry Point · Clayton County |
1,155 | 0 | 0 | |
|
Panora Water Works Panora · Guthrie County |
1,142 | 3 | 0 | |
|
Glidden Water Supply Glidden · Carroll County |
1,140 | 1 | 0 | |
|
Lake View Water Supply Lake View · Sac County |
1,133 | 2 | 0 | |
|
Villisca Municipal Water Dept Villisca · Montgomery County |
1,132 | 0 | 0 | |
|
Sheffield Water Supply Sheffield · Franklin County |
1,130 | 0 | 0 | |
|
Aplington Water Supply Aplington · Butler County |
1,126 | 0 | 0 | |
|
Calmar Water Supply Calmar · Winneshiek County |
1,125 | 0 | 0 | |
|
Mapleton Municipal Water Plant Mapleton · Monona County |
1,124 | 1 | 0 | |
|
Arnolds Park Water Department Arnolds Park · Dickinson County |
1,113 | 0 | 0 | |
|
Fairbank Water Supply Fairbank · Buchanan County |
1,111 | 1 | 0 | |
|
Iowa Army Ammunition Plant Burlington · Des Moines County |
1,100 | 0 | 0 | |
|
Conrad Water Supply Conrad · Grundy County |
1,098 | 0 | 0 | |
|
George Water Supply George · Lyon County |
1,082 | 0 | 0 | |
|
Marcus Water Supply Marcus · Cherokee County |
1,079 | 0 | 0 | |
|
Sidney Water Supply Sidney · Fremont County |
1,077 | 1 | 0 | |
|
Sapp Bros Travel Centers Percival · Fremont County |
1,074 | 0 | 0 | |
|
Van Meter Municipal Water Work Van Meter · Dallas County |
1,074 | 0 | 0 | |
|
Rockwell Water Supply Rockwell · Cerro Gordo County |
1,071 | 1 | 0 | |
|
Elk Run Heights Water Supply Elk Run Heights · Black Hawk County |
1,069 | 0 | 0 | |
|
North English Water Department North English · Iowa County |
1,065 | 0 | 0 | |
|
Riverside Water Supply Riverside · Washington County |
1,060 | 0 | 0 | |
|
Treynor Water Department Treynor · Pottawattamie County |
1,049 | 1 | 0 | |
|
Malvern Water Supply Malvern · Mills County |
1,046 | 1 | 0 | |
|
Sloan Water Supply Sloan · Woodbury County |
1,042 | 0 | 0 | |
|
Clarence Water Supply Clarence · Cedar County |
1,039 | 0 | 0 | |
|
Woodland Camp Property Owners Little Sioux · Harrison County |
1,037 | 2 | 0 | |
|
Dunlap Water Supply Dunlap · Harrison County |
1,035 | 2 | 0 | |
|
Winfield Muni Water Dept Winfield · Henry County |
1,035 | 0 | 0 | |
|
Janesville Water Supply Janesville · Bremer County |
1,034 | 0 | 0 | |
|
Autumn Ridge Estates MHP Ankeny · Polk County |
1,032 | 0 | 0 | |
|
Mechanicsville Water Dept Mechanicsville · Cedar County |
1,020 | 1 | 0 | |
|
Tabor Water Supply Tabor · Fremont County |
1,014 | 1 | 0 | |
|
Griswold Water Supply Griswold · Cass County |
1,008 | 1 | 0 | |
|
Eagle Ridge Marion · Linn County |
1,005 | 0 | 0 | |
|
Baxter Water Supply Baxter · Jasper County |
1,002 | 2 | 1 | |
|
Pleasant Creek ST Rec Area-North Palo · Linn County |
1,000 | 0 | 0 | |
|
Paullina Municipal Water Supply Paullina · O'Brien County |
996 | 0 | 0 | |
|
Greene Muni Water Supply Greene · Butler County |
994 | 0 | 0 | |
|
Odebolt Water Supply Odebolt · Sac County |
994 | 0 | 0 | |
|
Yes Five Seasons Cedar LLC Cedar Rapids · Linn County |
994 | 0 | 0 | |
|
Lawton Water Supply Lawton · Woodbury County |
988 | 0 | 0 | |
|
Fredericksburg Water Supply Fredericksburg · Chickasaw County |
987 | 0 | 0 | |
|
Lansing Water Supply Lansing · Allamakee County |
983 | 0 | 0 | |
|
Anita Municipal Utilities Anita · Cass County |
972 | 0 | 0 | |
|
Aurelia Water Supply Aurelia · Cherokee County |
968 | 0 | 0 | |
|
Allison Water Supply Allison · Butler County |
966 | 0 | 0 | |
|
Wayland Water Supply Wayland · Henry County |
966 | 1 | 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.