Combined Radium (-226 and -228) violations in Iowa
25 active public water systems in Iowa had a Combined Radium (-226 and -228) violation in the past three years, 3 of them in the latest quarter of EPA's data. What Combined Radium (-226 and -228) is and why it matters.
Systems with a Combined Radium (-226 and -228) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Grinnell Water Department Grinnell · Poweshiek County |
9,564 | 2 | 0 | |
|
Holy Cross Water Supply Holy Cross · Dubuque County |
356 | 2 | 0 | |
|
Kesslers Homeowners Assn Iowa City · Johnson County |
60 | 1 | 0 | |
|
Fairfield Water Supply Fairfield · Jefferson County |
9,821 | 1 | 0 | |
|
Red Oak Water Supply Red Oak · Montgomery County |
5,596 | 2 | 0 | |
|
Dyersville Municipal Water CO Dyersville · Dubuque County |
4,477 | 1 | 0 | |
|
Emmetsburg Municipal Water Department Emmetsburg · Palo Alto County |
3,733 | 1 | 0 | |
|
Mitchellville Water Supply Mitchellville · Polk County |
2,515 | 4 | 1 | |
|
LA Porte City Utilities La Porte City · Black Hawk County |
2,284 | 1 | 0 | |
|
Lamoni Municipal Utilities Lamoni · Decatur County |
2,029 | 5 | 0 | |
|
Lake City Water Supply Lake City · Calhoun County |
1,731 | 1 | 0 | |
|
Riceville Water Supply Riceville · Howard County |
816 | 2 | 1 | |
|
Grand Jct Municipal Water Dept Grand Junction · Greene County |
725 | 2 | 0 | |
|
Clover Ridge Subdivision Walford · Benton County |
413 | 1 | 0 | |
|
Lehigh Water Supply Lehigh · Webster County |
395 | 1 | 0 | |
|
Mondamin Water Supply Mondamin · Harrison County |
339 | 2 | 0 | |
|
Riverton Water Works Riverton · Fremont County |
250 | 2 | 0 | |
|
Coulter Water Supply Coulter · Franklin County |
219 | 3 | 0 | |
|
Oakville Water Supply Oakville · Louisa County |
200 | 3 | 0 | |
|
Sunnyside Village MHP LLC Missouri Valley · Harrison County |
190 | 5 | 3 | |
|
Rustic Oaks Homeowners Assn. Blue Grass · Scott County |
100 | 1 | 0 | |
|
Wiota Water Works Wiota · Cass County |
95 | 3 | 0 | |
|
Quality Water, Inc. #2 (k-L) Dubuque · Dubuque County |
70 | 3 | 0 | |
|
Orchard Water Works Orchard · Mitchell County |
68 | 2 | 1 | |
|
Lindsey Estates Swisher · Johnson County |
62 | 4 | 2 |
About this data
A system is counted once if any of its violations in the past three years involved Combined Radium (-226 and -228), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Combined Radium (-226 and -228) alone.
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.