Iowa
Harrison County drinking water quality
20 active public water systems serve 10,181 people in Harrison County. 6 are compliant, 14 had at least one EPA violation in the past three years, 0 are designated serious violators, and 0 carry a health flag.
Community water systems
11 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Missouri Valley Water Supply Missouri Valley |
2,678 | 2 | 1 | |
|
Woodbine Water Department Woodbine |
1,625 | 1 | 0 | |
|
Logan Water Supply Logan |
1,397 | 1 | 0 | |
|
Dunlap Water Supply Dunlap |
1,035 | 2 | 0 | |
|
Mondamin Water Supply Mondamin |
339 | 2 | 0 | |
|
Modale Water Supply Modale |
280 | 0 | 0 | |
|
Pisgah Water Supply Pisgah |
245 | 0 | 0 | |
|
Sunnyside Village MHP LLC Missouri Valley |
190 | 5 | 3 | |
|
Magnolia, City of Magnolia |
188 | 0 | 0 | |
|
Little Sioux Water Department Little Sioux |
150 | 3 | 1 | |
|
Valley View Water Association Missouri Valley |
65 | 3 | 0 |
Non-community systems (9: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Woodland Camp Property Owners Little Sioux |
1,037 | 2 | 0 | |
|
Desoto Natl Wildlife Refuge-Visitor Ctr Missouri Valley |
505 | 2 | 0 | |
|
Logan-Missouri Valley Country Club Logan |
178 | 1 | 0 | |
|
The Twisted Tail Beebeetown |
85 | 0 | 0 | |
|
Wilson Island State Rec Area Missouri Valley |
60 | 2 | 0 | |
|
Nutrien AG Solutions Dunlap |
49 | 2 | 1 | |
|
The Fence Post Little Sioux |
25 | 0 | 0 | |
|
Willow Lake Park-Harrison Cons Woodbine |
25 | 0 | 0 | |
|
Woodbine Golf Course Woodbine |
25 | 3 | 1 |
Inactive systems (37, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.