We found 34 public water systems that could serve the same population as Belknap (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Vienna Correctional Center | County of Johnson | 4,042 | 0 | 8 |
| Burnside Pwd | County of Johnson | 2,899 | 0 | 2 |
| Shawnee Crctl Cntr | Bloomfield Twp | 1,850 | 0 | 0 |
| Vienna | Vienna | 1,697 | 0 | 143 |
| Goreville | Goreville | 1,049 | 0 | 1 |
| Allen Veach, Manager | County of Johnson | 232 | 0 | 0 |
| Allen Veach, Manager | County of Johnson | 232 | 0 | 0 |
| Cypress Elem School Dist 64 | County of Johnson | 215 | 0 | 0 |
| New Simpson Hill Dist 32 | County of Johnson | 195 | 0 | 0 |
| Cypress Elementary School | County of Johnson | 140 | 0 | 0 |
| Rose Farms Migrant Labor Camp | County of Johnson | 108 | 0 | 0 |
| Cedar Lake Resort | County of Johnson | 100 | 0 | 0 |
| Johnson County Masonic Lodge | County of Johnson | 100 | 0 | 0 |
| Damron Livestock Sales | County of Johnson | 100 | 0 | 0 |
| Damron Livestock Sales | County of Johnson | 100 | 0 | 0 |
| Pleasant Grove Water Supply Corporation | County of Johnson | 91 | 0 | 0 |
| New Simpson Hill Dist 32 | County of Johnson | 90 | 0 | 0 |
| Jack's Shell Service | County of Johnson | 50 | 0 | 0 |
| Triple T Cedar Lake Ranch | County of Johnson | 50 | 0 | 0 |
| Columbia Quarry Co | County of Johnson | 50 | 0 | 0 |
| Jack's Shell Service | County of Johnson | 50 | 0 | 0 |
| Mathis Country Store | County of Johnson | 50 | 0 | 0 |
| Mathis Country Store | County of Johnson | 50 | 0 | 0 |
| Bullock's Grocery | County of Johnson | 40 | 0 | 0 |
| Bullock's Grocery | County of Johnson | 40 | 0 | 0 |
| Green Produce | County of Johnson | 25 | 0 | 0 |
| County of Johnson | 25 | 0 | 0 | |
| Sams Iga | County of Johnson | 25 | 0 | 0 |
| Columbia Quarry Company | County of Johnson | 25 | 0 | 0 |
| Fern Clyffe Stt Pk | Unspec Pl In Co | 25 | 0 | 0 |
| Mount's Sheltered Care Home | County of Johnson | 25 | 0 | 0 |
| Usfs Buck Ridge #2 Campground | County of Johnson | 25 | 0 | 0 |
| Wagon Wheel Picnic Area | County of Johnson | 25 | 0 | 0 |
| Usfs Buck Ridge #1 Campground | County of Johnson | 25 | 0 | 0 |