Water quality in Missouri Valley, Iowa
Missouri Valley is in Harrison 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 |
|---|---|---|---|---|
| Missouri Valley Water Supply Missouri Valley |
2,678 | 2 | 2.8 mi | |
| Sunnyside Village MHP LLC Missouri Valley |
190 | 5 | 3.4 mi | |
| Modale Water Supply Modale |
280 | 0 | 7.0 mi | |
| Logan Water Supply Logan |
1,397 | 1 | 10.4 mi | |
| Magnolia, City of Magnolia |
188 | 0 | 11.3 mi | |
| Mondamin Water Supply Mondamin |
339 | 2 | 12.7 mi | |
| Woodbine Water Department Woodbine |
1,625 | 1 | 18.1 mi | |
| Little Sioux Water Department Little Sioux |
150 | 3 | 19.3 mi | |
| Pisgah Water Supply Pisgah |
245 | 0 | 20.4 mi | |
| Dunlap Water Supply Dunlap |
1,035 | 2 | 27.8 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 |
|---|---|---|---|---|
|
Desoto Natl Wildlife Refuge-Visitor Ctr Missouri Valley |
505 | 2 | 0 | |
|
Wilson Island State Rec Area Missouri Valley |
60 | 2 | 0 | |
|
Logan-Missouri Valley Country Club Logan |
178 | 1 | 0 | |
|
The Twisted Tail Beebeetown |
85 | 0 | 0 | |
|
Woodbine Golf Course Woodbine |
25 | 3 | 1 | |
|
Willow Lake Park-Harrison Cons Woodbine |
25 | 0 | 0 | |
|
The Fence Post Little Sioux |
25 | 0 | 0 | |
|
Woodland Camp Property Owners Little Sioux |
1,037 | 2 | 0 | |
|
Nutrien AG Solutions Dunlap |
49 | 2 | 1 |
About this data
Water systems are matched to Harrison County, nearest to Missouri Valley 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.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.