Gross Alpha, Excl. Radon and U violations in Iowa
18 active public water systems in Iowa had a Gross Alpha, Excl. Radon and U violation in the past three years, 2 of them still unresolved. What Gross Alpha, Excl. Radon and U is and why it matters.
Systems with a Gross Alpha, Excl. Radon and U violation
Unresolved first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Hanlontown Water Supply System Hanlontown · Worth County |
206 | 2 | 1 | |
|
Woodlyn Hills Algona · Kossuth County |
80 | 3 | 0 | |
|
Altoona Water Supply Altoona · Polk County |
22,436 | 1 | 0 | |
|
Grinnell Water Department Grinnell · Poweshiek County |
9,564 | 2 | 0 | |
|
Red Oak Water Supply Red Oak · Montgomery County |
5,596 | 2 | 0 | |
|
Postville Water Department Postville · Allamakee County |
2,513 | 2 | 0 | |
|
Lamoni Municipal Utilities Lamoni · Decatur County |
2,029 | 5 | 0 | |
|
Farley Water Supply Farley · Dubuque County |
1,766 | 1 | 0 | |
|
Lake City Water Supply Lake City · Calhoun County |
1,731 | 1 | 0 | |
|
Tabor Water Supply Tabor · Fremont County |
1,014 | 1 | 0 | |
|
Lost Nation Water Supply Lost Nation · Clinton County |
434 | 3 | 0 | |
|
Mondamin Water Supply Mondamin · Harrison County |
339 | 2 | 0 | |
|
Ridgeway, City of Ridgeway · Winneshiek County |
275 | 1 | 0 | |
|
Riverton Water Works Riverton · Fremont County |
250 | 2 | 0 | |
|
Sunnyside Village MHP LLC Missouri Valley · Harrison County |
190 | 5 | 3 | |
|
Lindsey Estates Swisher · Johnson County |
62 | 4 | 2 | |
|
Montipark LLC Monticello · Jones County |
60 | 10 | 4 | |
|
Clayton Water Supply Clayton · Clayton County |
45 | 1 | 0 |
About this data
A system is counted once if any of its violations in the past three years involved Gross Alpha, Excl. Radon and U, including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Gross Alpha, Excl. Radon and U 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. Retrieved from ECHO on Oct 11, 2026.