All water systems in Iowa
1,804 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lake Panorama Water Company Panora · Guthrie County |
2,900 | 0 | 0 | |
|
Sibley Public Water Supply Sibley · Osceola County |
2,860 | 0 | 0 | |
|
Fairfax Water Supply Fairfax · Linn County |
2,828 | 0 | 0 | |
|
Clarion Water Supply Clarion · Wright County |
2,810 | 0 | 0 | |
|
Grundy Center Water Supply Grundy Center · Grundy County |
2,796 | 0 | 0 | |
|
Bloomfield Muni Water Dept Bloomfield · Davis County |
2,792 | 0 | 0 | |
|
Hawarden Water Supply Hawarden · Sioux County |
2,700 | 0 | 0 | |
|
Missouri Valley Water Supply Missouri Valley · Harrison County |
2,678 | 2 | 1 | |
|
Eldora Water Supply Eldora · Hardin County |
2,664 | 0 | 0 | |
|
Kalona Water Dept Kalona · Washington County |
2,630 | 0 | 0 | |
|
Rock Rapids Municipal Water Works Rock Rapids · Lyon County |
2,611 | 0 | 0 | |
|
Sirwa Corning Brooks · Adams County |
2,585 | 0 | 0 | |
|
Center Point Water Supply Center Point · Linn County |
2,579 | 0 | 0 | |
|
Hudson Water Supply Hudson · Black Hawk County |
2,546 | 1 | 0 | |
|
West Union Water Supply West Union · Fayette County |
2,540 | 0 | 0 | |
|
Mitchellville Water Supply Mitchellville · Polk County |
2,515 | 4 | 1 | |
|
Postville Water Department Postville · Allamakee County |
2,513 | 2 | 0 | |
|
West Branch Water Works West Branch · Cedar County |
2,509 | 1 | 0 | |
|
Jesup Municipal Water Supply Jesup · Buchanan County |
2,508 | 0 | 0 | |
|
Poweshiek Water Association (iac) South Amana · Iowa County |
2,490 | 0 | 0 | |
|
Belmond Water Supply Belmond · Wright County |
2,463 | 0 | 0 | |
|
Marengo Water Supply Marengo · Iowa County |
2,435 | 0 | 0 | |
|
W Central Rwa Denison Subsys Denison · Crawford County |
2,428 | 0 | 0 | |
|
Ogden Municipal Utilities Ogden · Boone County |
2,419 | 0 | 0 | |
|
Toledo Water Supply Toledo · Tama County |
2,399 | 0 | 0 | |
|
Park View Water & Sanitary District Eldridge · Scott County |
2,389 | 0 | 0 | |
|
Cascade Municipal Water Supply Cascade · Dubuque County |
2,386 | 0 | 0 | |
|
Hull Water Supply Hull · Sioux County |
2,384 | 0 | 0 | |
|
Belle Plaine Water Dept Belle Plaine · Benton County |
2,380 | 0 | 0 | |
|
Bellevue Municipal Utilities Bellevue · Jackson County |
2,363 | 0 | 0 | |
|
Ely Water Supply Ely · Linn County |
2,328 | 0 | 0 | |
|
Colfax Water Supply Colfax · Jasper County |
2,305 | 0 | 0 | |
|
LA Porte City Utilities La Porte City · Black Hawk County |
2,284 | 1 | 0 | |
|
Peosta Water Supply Peosta · Dubuque County |
2,278 | 0 | 0 | |
|
Rock Valley Rural Water District Rock Valley · Sioux County |
2,250 | 0 | 0 | |
|
Rockwell City Water Supply Rockwell City · Calhoun County |
2,250 | 1 | 0 | |
|
Lisbon Water Supply Lisbon · Linn County |
2,233 | 1 | 0 | |
|
Greenfield Municipal Utilities Greenfield · Adair County |
2,227 | 0 | 0 | |
|
Lake Mills Municipal Water Dept-South Lake Mills · Winnebago County |
2,158 | 0 | 0 | |
|
Osceola Rural Water System-South Sutherland · Osceola County |
2,112 | 0 | 0 | |
|
Sac City Municipal Water Plant Sac City · Sac County |
2,093 | 0 | 0 | |
|
Alta Municipal Water Plant Alta · Buena Vista County |
2,087 | 0 | 0 | |
|
Northwood Waterworks Northwood · Worth County |
2,072 | 0 | 0 | |
|
Britt Water Works Britt · Hancock County |
2,064 | 2 | 0 | |
|
Atkins Municipal Water Works Atkins · Benton County |
2,056 | 0 | 0 | |
|
Audubon Water Supply Audubon · Audubon County |
2,053 | 1 | 0 | |
|
Ida Grove Water Utility Ida Grove · Ida County |
2,051 | 0 | 0 | |
|
Irua (dows) Dows · Franklin County |
2,042 | 0 | 0 | |
|
Sumner Water Supply Sumner · Bremer County |
2,030 | 0 | 0 | |
|
Lamoni Municipal Utilities Lamoni · Decatur County |
2,029 | 5 | 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.