We found 11 public water systems that could serve the same population as Spook Cave (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Mcgregor Water Dept | Mcgregor | 876 | 0 | 0 |
| Pikes Peak State Park-campground | Mcgregor | 750 | 0 | 13 |
| Effigy Mounds National Monument | Mcgregor | 328 | 0 | 6 |
| Breezy Pointe Subdivision | Mcgregor | 110 | 0 | 0 |
| YELLOW RIVER STATE FOREST | Mcgregor | 80 | 0 | 0 |
| Mcgregor Water Supply / Ridgewood West | Mcgregor | 70 | 0 | 0 |
| White Springs | Mcgregor | 70 | 0 | 0 |
| Maggies Diner | Mcgregor | 41 | 0 | 0 |
| Bloody Run County Park | Mcgregor | 35 | 0 | 0 |
| Walters Mobile Home Park | Mcgregor | 25 | 0 | 0 |
| Upper Miss F&w Refuge Mcgregor District | Mcgregor | 25 | 0 | 0 |