All water systems in Iowa
1,804 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Heidelberg Materials US Cement LLC Mason City · Cerro Gordo County |
130 | 0 | 0 | |
|
Hickory Hills Second Annex Blue Grass · Scott County |
130 | 0 | 0 | |
|
Pleasant Valley Golf Course Iowa City · Johnson County |
130 | 0 | 0 | |
|
Timberline Golf Course Inc. Peosta · Dubuque County |
130 | 3 | 1 | |
|
Vincent Water Supply Vincent · Webster County |
130 | 1 | 0 | |
|
Brunsville Municipal Water Supply Brunsville · Plymouth County |
129 | 0 | 0 | |
|
Fremont Golf Course Sidney · Fremont County |
129 | 1 | 0 | |
|
Guttenberg Golf & Country Club Guttenberg · Clayton County |
129 | 1 | 1 | |
|
Harvest Farm Campground LLC Kendallville · Winneshiek County |
129 | 0 | 0 | |
|
Monmouth Water Supply Monmouth · Jackson County |
129 | 2 | 0 | |
|
Evangelical Covenant Church Pomeroy · Pocahontas County |
128 | 0 | 0 | |
|
Mt. Crescent Ski Area Crescent · Pottawattamie County |
128 | 1 | 1 | |
|
Oak Lake Maintenance, Inc. Algona · Kossuth County |
128 | 0 | 0 | |
|
Somers Water Works Somers · Calhoun County |
128 | 1 | 0 | |
|
Heineejos INC Toronto · Clinton County |
127 | 0 | 0 | |
|
Woodland Wapello Mobile Home Park Wapello · Louisa County |
126 | 1 | 0 | |
|
Carriage Place Estates HOA Bettendorf · Scott County |
125 | 1 | 0 | |
|
Jp's Country Store Hazleton · Buchanan County |
125 | 0 | 0 | |
|
Larrabee Municipal Water Works Larrabee · Cherokee County |
125 | 0 | 0 | |
|
Linwood Mining and Minerals Corp Buffalo · Scott County |
125 | 1 | 0 | |
|
Living Hope Mennonite Church Charles City · Floyd County |
125 | 1 | 0 | |
|
Lizard Creek Ranch Fort Dodge · Webster County |
125 | 0 | 0 | |
|
Pony Creek #1 HOA Pacific Junction · Mills County |
125 | 0 | 0 | |
|
Revelle 6th & 7th Addition Blue Grass · Scott County |
125 | 0 | 0 | |
|
Saints Avenue Apartments Waverly · Bremer County |
125 | 0 | 0 | |
|
Scooters Anamosa · Jones County |
125 | 0 | 0 | |
|
Airport Lake Park-Chickasaw Ccb New Hampton · Chickasaw County |
124 | 0 | 0 | |
|
Rowan Muni Water Supply Rowan · Wright County |
124 | 1 | 0 | |
|
Washington Prairie Lutheran Church Decorah · Winneshiek County |
124 | 1 | 0 | |
|
Westfield Water Supply Westfield · Plymouth County |
123 | 0 | 0 | |
|
Lakeview Knolls Homeowners Assn. Iowa City · Johnson County |
122 | 0 | 0 | |
|
Market at Oakwood Clear Lake · Cerro Gordo County |
122 | 0 | 0 | |
|
Ledyard Water Supply Ledyard · Kossuth County |
121 | 0 | 0 | |
|
Louisa Courts MHP & Sales Muscatine · Muscatine County |
121 | 2 | 0 | |
|
Saint Marys Water Corporation Saint Marys · Warren County |
121 | 0 | 0 | |
|
Welton Water Supply Welton · Clinton County |
121 | 0 | 0 | |
|
Bella Terre Vineyard & Reception Hall Glenwood · Mills County |
120 | 0 | 0 | |
|
Camp Shalom Maquoketa · Jackson County |
120 | 1 | 0 | |
|
Culvers Lawn and Garden Marion · Linn County |
120 | 2 | 1 | |
|
Hartwick Point Well Delhi · Delaware County |
120 | 0 | 0 | |
|
Old East Paint Creek Lutheran Church Waterville · Allamakee County |
120 | 0 | 0 | |
|
Rembrandt Enterprises INC (rembrandt) Rembrandt · Buena Vista County |
120 | 0 | 0 | |
|
Sobaski Real Estate Fairfax · Linn County |
120 | 0 | 0 | |
|
Westcott Heights HOA Part Three Iowa City · Johnson County |
120 | 0 | 0 | |
|
Lanesboro Water Works Lanesboro · Carroll County |
119 | 2 | 0 | |
|
Gilbertson Park Elgin · Fayette County |
118 | 0 | 0 | |
|
Harper Water Supply Harper · Keokuk County |
118 | 0 | 0 | |
|
Rolling Knolls Golf Course Dyersville · Dubuque County |
118 | 2 | 1 | |
|
Spook Cave and Campground Mcgregor · Clayton County |
118 | 2 | 1 | |
|
Harborview Leasing LLC Bettendorf · Scott County |
117 | 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 currently 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.