Calhoun County, Iowa
14 active water systems in this county.
| Water System | Population Served | Source | Violations | Health-Based |
|---|---|---|---|---|
| Knierim Water Supply | 53 | Groundwater | 25 | 25 |
| Rockwell City Water Supply | 2,250 | Groundwater | 6 | 2 |
| Pomeroy Water Supply | 671 | Groundwater | 11 | 1 |
| Yetter Municipal Water Supply | 25 | Groundwater | 10 | 0 |
| Lake City Water Supply | 1,731 | Groundwater | 8 | 0 |
| Manson Water Supply | 1,709 | Groundwater | 4 | 0 |
| Twin Lakes Utilities | 300 | Groundwater Purchased | 4 | 0 |
| Somers Water Works | 128 | Groundwater | 4 | 0 |
| Lytton Water Department | 282 | Groundwater | 2 | 0 |
| Rinard Water Supply | 38 | Groundwater | 2 | 0 |
| Jolley Water Supply | 28 | Groundwater | 1 | 0 |
| Lohrville Water Supply | 381 | Groundwater | 0 | 0 |
| Farnhamville Water Supply | 379 | Groundwater | 0 | 0 |
| Twin Lakes Golf Club | 39 | Groundwater | 0 | 0 |