O'brien County, Iowa
7 active water systems in this county.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Sanborn Water Supply | 1,392 | Groundwater | 31 | 0 |
| Paullina Municipal Water Supply | 996 | Groundwater | 12 | 0 |
| Primghar Municipal Water Supply | 896 | Groundwater | 3 | 0 |
| Sutherland Water Supply | 629 | Groundwater Purchased | 2 | 0 |
| Sheldon Water Department | 5,512 | Groundwater | 0 | 0 |
| Hartley Municipal Water Department | 1,605 | Groundwater | 0 | 0 |
| Calumet Water Supply | 146 | Groundwater Purchased | 0 | 0 |