Water quality for ZIP code 51557
ZIP 51557 covers Mondamin in Harrison County, Iowa, one of 10 ZIP codes in the county. 20 active public water systems serve the county; 14 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Harrison County
10 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Little Sioux Water Department Little Sioux |
150 | 3 | 5.5 mi | |
| Magnolia, City of Magnolia |
188 | 0 | 6.9 mi | |
| Modale Water Supply Modale |
280 | 0 | 7.7 mi | |
| Pisgah Water Supply Pisgah |
245 | 0 | 8.0 mi | |
| Logan Water Supply Logan |
1,397 | 1 | 12.2 mi | |
| Valley View Water Association Missouri Valley |
65 | 3 | 12.4 mi | |
| Missouri Valley Water Supply Missouri Valley |
2,678 | 2 | 13.0 mi | |
| Sunnyside Village MHP LLC Missouri Valley |
190 | 5 | 13.0 mi | |
| Woodbine Water Department Woodbine |
1,625 | 1 | 14.9 mi | |
| Dunlap Water Supply Dunlap |
1,035 | 2 | 22.3 mi |
Non-community systems in Harrison County (9: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
The Fence Post Little Sioux |
25 | 0 | 0 | |
|
Woodland Camp Property Owners Little Sioux |
1,037 | 2 | 0 | |
|
Willow Lake Park-Harrison Cons Woodbine |
25 | 0 | 0 | |
|
Logan-Missouri Valley Country Club Logan |
178 | 1 | 0 | |
|
Desoto Natl Wildlife Refuge-Visitor Ctr Missouri Valley |
505 | 2 | 0 | |
|
Woodbine Golf Course Woodbine |
25 | 3 | 1 | |
|
Wilson Island State Rec Area Missouri Valley |
60 | 2 | 0 | |
|
The Twisted Tail Beebeetown |
85 | 0 | 0 | |
|
Nutrien AG Solutions Dunlap |
49 | 2 | 1 |
About this data
Water systems are matched to Harrison County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
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.