All water systems in Iowa
1,804 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Highland High School Riverside · Washington County |
405 | 0 | 0 | |
|
Epic Event Center Marion · Linn County |
404 | 3 | 1 | |
|
Camp Ingawanis-Maple and Ranger Well Waverly · Bremer County |
402 | 2 | 1 | |
|
Charlotte Water Works Charlotte · Clinton County |
401 | 0 | 0 | |
|
Ainsworth 4 Corners Restaurant Ainsworth · Washington County |
400 | 0 | 0 | |
|
Bluff Lake Catfish Farm Maquoketa · Jackson County |
400 | 0 | 0 | |
|
Cody Elementary School Pleasant Valley · Scott County |
400 | 0 | 0 | |
|
Dubuque Sports Complex Dubuque · Dubuque County |
400 | 3 | 0 | |
|
Gateway Development Iowa City · Johnson County |
400 | 0 | 0 | |
|
Thornton Water Supply Thornton · Cerro Gordo County |
400 | 1 | 0 | |
|
Triple Play LLC Cedar Rapids · Linn County |
400 | 1 | 1 | |
|
West Branch MHP West Branch · Cedar County |
400 | 2 | 0 | |
|
Union Water Supply Union · Hardin County |
399 | 0 | 0 | |
|
Earling Water Supply Earling · Shelby County |
397 | 1 | 0 | |
|
Salem Water Supply Salem · Henry County |
396 | 2 | 1 | |
|
G G Brothers West Liberty · Cedar County |
395 | 2 | 1 | |
|
Lehigh Water Supply Lehigh · Webster County |
395 | 1 | 0 | |
|
Plainfield Water Supply Plainfield · Bremer County |
393 | 0 | 0 | |
|
Southwest Polk Water Service, Inc. West Des Moines · Polk County |
393 | 0 | 0 | |
|
Stover Heights MHC Des Moines · Polk County |
393 | 0 | 0 | |
|
Columbus City Public Water Supply Columbus City · Louisa County |
392 | 1 | 0 | |
|
Bonaparte Water Supply Bonaparte · Van Buren County |
390 | 0 | 0 | |
|
River Heights Property Owners Assoc. Coralville · Johnson County |
390 | 1 | 0 | |
|
Wesley Water Supply Wesley · Kossuth County |
390 | 0 | 0 | |
|
Cedar Falls Mobile Home Village Cedar Falls · Black Hawk County |
388 | 0 | 0 | |
|
Casey Water Supply Casey · Guthrie County |
387 | 0 | 0 | |
|
Colesburg Water Supply Colesburg · Delaware County |
386 | 0 | 0 | |
|
New Market Water Supply New Market · Taylor County |
385 | 0 | 0 | |
|
Duncombe Water Supply Duncombe · Webster County |
384 | 0 | 0 | |
|
Livermore Water Supply Livermore · Humboldt County |
383 | 1 | 1 | |
|
Vail Water Supply Vail · Crawford County |
383 | 0 | 0 | |
|
Marshalltown Estates Marshalltown · Marshall County |
382 | 3 | 0 | |
|
New Vienna Water Supply New Vienna · Dubuque County |
382 | 1 | 0 | |
|
Worthington Water Supply Worthington · Dubuque County |
382 | 0 | 0 | |
|
Lohrville Water Supply Lohrville · Calhoun County |
381 | 0 | 0 | |
|
Andrew Water Supply Andrew · Jackson County |
380 | 1 | 0 | |
|
Lynnville Water Dept Lynnville · Jasper County |
380 | 0 | 0 | |
|
Milton Water Supply Milton · Van Buren County |
380 | 1 | 0 | |
|
Farnhamville Water Supply Farnhamville · Calhoun County |
379 | 0 | 0 | |
|
Plymouth Water Supply Plymouth · Cerro Gordo County |
378 | 5 | 1 | |
|
Churdan Water Supply Churdan · Greene County |
375 | 0 | 0 | |
|
Hickory Hollow Water Service, Inc. Ankeny · Polk County |
375 | 0 | 0 | |
|
Mark Twain Meadows Homeowners Muscatine · Muscatine County |
375 | 0 | 0 | |
|
Fox Ridge Farm Iowa City · Johnson County |
374 | 0 | 0 | |
|
Callender Water Supply Callender · Webster County |
371 | 0 | 0 | |
|
Spillville Water Supply Spillville · Winneshiek County |
371 | 0 | 0 | |
|
Orient Municipal Water Supply Orient · Adair County |
368 | 0 | 0 | |
|
Birmingham Water Supply Birmingham · Van Buren County |
367 | 0 | 0 | |
|
Ringsted Water Supply Ringsted · Emmet County |
365 | 1 | 0 | |
|
Massena Water Supply Massena · Cass County |
364 | 5 | 1 |
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.