All water systems in Iowa
1,804 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Volga River Rec. Area Fayette · Fayette County |
150 | 0 | 0 | |
|
Wapsipinicon State Pk-Campground/lodge Anamosa · Jones County |
150 | 0 | 0 | |
|
Winding Brook Mobile Home Park De Witt · Clinton County |
150 | 0 | 0 | |
|
Eastern Hills Baptist Church Council Bluffs · Pottawattamie County |
149 | 0 | 0 | |
|
Marr Park Ainsworth · Washington County |
148 | 1 | 0 | |
|
Woods and Meadows Subdivision Le Claire · Scott County |
148 | 0 | 0 | |
|
Braddyville Water Works Braddyville · Page County |
147 | 0 | 0 | |
|
Coralville Lake-Sandy Beach Iowa City · Johnson County |
147 | 0 | 0 | |
|
Calumet Water Supply Calumet · O'Brien County |
146 | 0 | 0 | |
|
Cedarcrest Golf & Country Club Columbus Junction · Louisa County |
146 | 1 | 0 | |
|
Christian Conference Center Newton · Jasper County |
146 | 1 | 0 | |
|
Dickens Water Works Spencer · Clay County |
146 | 0 | 0 | |
|
Lone Rock Water Supply Lone Rock · Kossuth County |
146 | 1 | 0 | |
|
Bankston Public Water System Bankston · Dubuque County |
145 | 0 | 0 | |
|
Bristow Muni Water Supply Bristow · Butler County |
145 | 1 | 0 | |
|
Castalia Water Works Castalia · Winneshiek County |
145 | 0 | 0 | |
|
Devils Creek Estates Home Assoc Buffalo · Scott County |
145 | 2 | 0 | |
|
Henderson Water Department Henderson · Mills County |
144 | 0 | 0 | |
|
Springbrook Water Dept Springbrook · Jackson County |
144 | 0 | 0 | |
|
Swaledale Water Supply Swaledale · Cerro Gordo County |
144 | 0 | 0 | |
|
West Chester Muni Wtr Supply West Chester · Washington County |
144 | 1 | 0 | |
|
Woolstock Water Supply Woolstock · Wright County |
144 | 0 | 0 | |
|
Brayton Water System Brayton · Audubon County |
143 | 0 | 0 | |
|
Delaware Municipal Water Supply Delaware · Delaware County |
142 | 0 | 0 | |
|
Little Sioux Park Correctionville · Woodbury County |
141 | 0 | 0 | |
|
Clear Lake Baptist Church Clear Lake · Cerro Gordo County |
140 | 2 | 1 | |
|
Clemons Water Supply Clemons · Marshall County |
140 | 1 | 1 | |
|
Fairfield Estates Mobile Home Park Fairfield · Jefferson County |
140 | 0 | 0 | |
|
Forestgate Subdivision Iowa City · Johnson County |
140 | 1 | 0 | |
|
Goodell Water Supply Goodell · Hancock County |
140 | 0 | 0 | |
|
MT Joy Mobile Home Park Davenport · Scott County |
140 | 2 | 1 | |
|
Oakgrove Christian Church Shellsburg · Benton County |
140 | 0 | 0 | |
|
Chester Water Supply Chester · Howard County |
139 | 1 | 0 | |
|
New Liberty Water Supply New Liberty · Scott County |
138 | 0 | 0 | |
|
Palmer Water Supply Palmer · Pocahontas County |
138 | 1 | 0 | |
|
Southshore Heights Knoxville · Marion County |
138 | 0 | 0 | |
|
Clare Water Department Clare · Webster County |
136 | 0 | 0 | |
|
Geneva Water Works Geneva · Franklin County |
136 | 0 | 0 | |
|
Ship's Place Wapello · Louisa County |
136 | 1 | 0 | |
|
Frankville Rwd Frankville · Winneshiek County |
135 | 0 | 0 | |
|
Lakewood Utilities Fort Dodge · Webster County |
135 | 0 | 0 | |
|
Millersburg Water Dept Millersburg · Iowa County |
135 | 0 | 0 | |
|
Superior Water System Superior · Dickinson County |
135 | 0 | 0 | |
|
Upper Iowa Resort & Rental Dorchester · Allamakee County |
135 | 2 | 1 | |
|
Lake Vista Subdivision Swisher · Johnson County |
134 | 0 | 0 | |
|
Pioneer Hi-Bred Durant Plant Durant · Cedar County |
134 | 0 | 0 | |
|
Timber Valley Estates (1st & 2nd Add) Blue Grass · Scott County |
132 | 2 | 1 | |
|
Happy Time Resort LLC Joice · Worth County |
131 | 0 | 0 | |
|
Breezy Pointe Subdivision Mcgregor · Clayton County |
130 | 1 | 0 | |
|
Havelock Water Supply Havelock · Pocahontas County |
130 | 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.