We found 13 public water systems that could serve the same population as Wonder Cave (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Big Creek Utility District | Altamont | 7,854 | 0 | 38 |
| Tracy City Water System | Tracy City | 4,539 | 0 | 28 |
| Monteagle Public Utility Board | Monteagle | 3,310 | 28 | 20 |
| Monteagle Sunday School Assmbly | County of Grundy | 525 | 0 | 4 |
| Monteagle Sunday School Assemb | County of Grundy | 525 | 0 | 0 |
| Skymont Scout Reservation | County of Grundy | 200 | 0 | 0 |
| Plainview Water System | Tracy City | 147 | 0 | 0 |
| Haven Of Rest | County of Grundy | 27 | 0 | 0 |
| Space Age Gift Shop | County of Grundy | 25 | 0 | 0 |
| Wonder Cave | County of Grundy | 25 | 0 | 0 |
| Williams Gene | County of Grundy | 25 | 0 | 0 |
| Grace Village Church | County of Grundy | 25 | 0 | 0 |
| Savage Gulf | County of Grundy | 25 | 0 | 0 |