Iowa
Woodbury County drinking water quality
32 active public water systems serve 99,514 people in Woodbury County. 25 are compliant, 7 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
17 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sioux City Water Supply Sioux City |
85,791 | 1 | 0 | |
|
Sergeant Bluff Water Supply Sergeant Bluff |
5,015 | 0 | 0 | |
|
Moville Water Supply Moville |
1,687 | 0 | 0 | |
|
Sloan Water Supply Sloan |
1,042 | 0 | 0 | |
|
Lawton Water Supply Lawton |
988 | 0 | 0 | |
|
Correctionville Water Supply Correctionville |
766 | 0 | 0 | |
|
Anthon Municipal Water System Anthon |
545 | 0 | 0 | |
|
Pierson Water Supply Pierson |
345 | 0 | 0 | |
|
Danbury Water Supply Danbury |
320 | 1 | 0 | |
|
Salix Water Supply Salix |
295 | 0 | 0 | |
|
Bronson Water Supply Bronson |
294 | 0 | 0 | |
|
Hornick Water Supply Hornick |
255 | 0 | 0 | |
|
Cushing Water Supply Cushing |
230 | 0 | 0 | |
|
Smithland Water Supply Smithland |
181 | 0 | 0 | |
|
Oto Water Supply Oto |
72 | 2 | 0 | |
|
East Side Acres Moville |
70 | 0 | 0 | |
|
Berea Heights INC Sioux City |
33 | 0 | 0 |
Non-community systems (15: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Lofted View Events Sioux City |
314 | 2 | 0 | |
|
Dorothy Pecaut Nature Center Sioux City |
208 | 0 | 0 | |
|
Green Valley Golf Course Sioux City |
180 | 1 | 0 | |
|
Stone State Park Sioux City |
150 | 1 | 0 | |
|
Little Sioux Park Correctionville |
141 | 0 | 0 | |
|
AG Processing Soy Plant Sergeant Bluff |
110 | 0 | 0 | |
|
Midamerican Energy CO Neal South Sioux City |
107 | 0 | 0 | |
|
Midamerican Energy Co. Neal North Sioux City |
100 | 0 | 0 | |
|
Browns Lake Bigelow Park Sioux City |
72 | 0 | 0 | |
|
AG Processing Refinery Sergeant Bluff |
50 | 1 | 0 | |
|
Salem Lutheran Church Correctionville Correctionville |
35 | 0 | 0 | |
|
Whiskey Creek (feedlot) Sioux City |
34 | 0 | 0 | |
|
Koch Fertilizer LLC Sergeant Bluff |
30 | 0 | 0 | |
|
Snyder Bend Pk-Woodbury Consrv Sioux City |
29 | 0 | 0 | |
|
Oscar Carl Vineyard Sioux City |
25 | 0 | 0 |
Inactive systems (53, 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.