Water quality for ZIP code 51056
ZIP 51056 covers Smithland in Woodbury County, Iowa, one of 20 ZIP codes in the county. 32 active public water systems serve the county; 7 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Woodbury County
16 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Oto Water Supply Oto |
72 | 2 | 4.3 mi | |
| Hornick Water Supply Hornick |
255 | 0 | 7.2 mi | |
| Anthon Municipal Water System Anthon |
545 | 0 | 11.2 mi | |
| Danbury Water Supply Danbury |
320 | 1 | 12.0 mi | |
| Sloan Water Supply Sloan |
1,042 | 0 | 13.7 mi | |
| Salix Water Supply Salix |
295 | 0 | 17.5 mi | |
| Bronson Water Supply Bronson |
294 | 0 | 17.6 mi | |
| East Side Acres Moville |
70 | 0 | 17.7 mi | |
| Moville Water Supply Moville |
1,687 | 0 | 18.1 mi | |
| Correctionville Water Supply Correctionville |
766 | 0 | 18.6 mi | |
| Lawton Water Supply Lawton |
988 | 0 | 20.1 mi | |
| Cushing Water Supply Cushing |
230 | 0 | 21.1 mi | |
| Pierson Water Supply Pierson |
345 | 0 | 21.4 mi | |
| Sergeant Bluff Water Supply Sergeant Bluff |
5,015 | 0 | 23.3 mi | |
| Berea Heights INC Sioux City |
33 | 0 | 28.3 mi | |
| Sioux City Water Supply Sioux City |
85,791 | 1 | 28.3 mi |
Non-community systems in Woodbury County (15: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lofted View Events Sioux City |
314 | 2 | 0 | |
|
Little Sioux Park Correctionville |
141 | 0 | 0 | |
|
Salem Lutheran Church Correctionville Correctionville |
35 | 0 | 0 | |
|
Browns Lake Bigelow Park Sioux City |
72 | 0 | 0 | |
|
Snyder Bend Pk-Woodbury Consrv Sioux City |
29 | 0 | 0 | |
|
Whiskey Creek (feedlot) Sioux City |
34 | 0 | 0 | |
|
Midamerican Energy CO Neal South Sioux City |
107 | 0 | 0 | |
|
AG Processing Soy Plant Sergeant Bluff |
110 | 0 | 0 | |
|
AG Processing Refinery Sergeant Bluff |
50 | 1 | 0 | |
|
Koch Fertilizer LLC Sergeant Bluff |
30 | 0 | 0 | |
|
Midamerican Energy Co. Neal North Sioux City |
100 | 0 | 0 | |
|
Green Valley Golf Course Sioux City |
180 | 1 | 0 | |
|
Oscar Carl Vineyard Sioux City |
25 | 0 | 0 | |
|
Dorothy Pecaut Nature Center Sioux City |
208 | 0 | 0 | |
|
Stone State Park Sioux City |
150 | 1 | 0 |
About this data
Water systems are matched to Woodbury 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 or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files.
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.