We found 46 public water systems that could serve the same population as Camp Judson (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Sioux Falls | Sioux Falls | 173,300 | 81 | 4 |
| Lincoln County Rural Water System | Harrisburg, Sioux Falls | 5,788 | 0 | 1 |
| Nps-mount Rushmore National Memorial | Keystone | 4,100 | 0 | 22 |
| Tm Rural Water District | Parker, Sioux Falls | 3,825 | 0 | 3 |
| Husets Speedway | Sioux Falls | 1,000 | 0 | 0 |
| Keystone Water Supply | Keystone | 622 | 0 | 23 |
| Rushmore Tramway Adventures | Keystone | 500 | 0 | 8 |
| Keystone Municipal Water | Keystone | 448 | 0 | 380 |
| Keystone | Keystone | 370 | 0 | 13 |
| Pine Lake Hills | Sioux Falls | 320 | 0 | 21 |
| Rushmore Mountain Coaster | Keystone | 300 | 0 | 0 |
| Rush Mountain Adventure Park | Keystone | 300 | 0 | 8 |
| Powder House Lodge | Keystone, Piedmont | 300 | 0 | 5 |
| Marion Manor | Sioux Falls | 280 | 0 | 0 |
| Valley View Estates | Sioux Falls | 205 | 0 | 11 |
| Rushmore View Motel | Keystone | 200 | 0 | 0 |
| Four Presidents Best Western | Keystone | 150 | 0 | 0 |
| Weeg's Trailer Court | Sioux Falls | 140 | 0 | 0 |
| Skyline Heights | Sioux Falls | 126 | 0 | 22 |
| Stetsons Corner Store | Keystone | 125 | 0 | 3 |
| The Lodge At Mount Rushmore | Keystone, St. Paul | 120 | 0 | 0 |
| Camp Judson | Keystone, Sioux Falls | 110 | 0 | 0 |
| Spokane Creek Cabins & Campground | Keystone | 100 | 0 | 0 |
| Moms Pantry | Keystone | 100 | 0 | 0 |
| Black Hills Children's Home | Piedmont, Rapid City, Sioux Falls | 95 | 0 | 0 |
| Paradise Water Company Llc | Lead, Sioux Falls | 55 | 0 | 0 |
| Kemp's Kamp East | Keystone | 48 | 0 | 0 |
| Thunderhead Episcopal Camp | Rapid City, Sioux Falls | 45 | 0 | 0 |
| Klein Ranch | Sioux Falls, Timber Lake | 45 | 0 | 0 |
| Kemp's Kamp Middle | Keystone | 43 | 0 | 0 |
| Holy Smoke Restaurant | Keystone | 40 | 0 | 0 |
| Holy Smoke Cabins | Keystone | 40 | 0 | 0 |
| Kemp's Kamp West | Keystone, Rapid City | 40 | 0 | 0 |
| Inland Seas Mobile Home Park | Keystone | 30 | 0 | 0 |
| Rustic Ridge Guest Cabins | Keystone | 30 | 0 | 0 |
| Martin Bay General Store | Keystone | 30 | 0 | 0 |
| Keith Co Dist 12 - Keystone School | Keystone | 26 | 0 | 0 |
| Kemp's Kamp Upper | Keystone | 26 | 0 | 0 |
| 38 Road House | Sioux Falls | 25 | 0 | 0 |
| Echo Valley Cabins | Keystone | 25 | 0 | 0 |
| Caddi Shack Campground | Keystone | 25 | 0 | 0 |
| Dj's Bar & Lounge | Sioux Falls | 25 | 0 | 0 |
| Rushmore Resort & Campground | Keystone | 25 | 0 | 0 |
| Wagon Wheel Campground | Sioux Falls | 25 | 0 | 0 |
| River Park Lodge | Sioux Falls | 25 | 0 | 0 |
| Lakefront Express | Keystone | 25 | 0 | 0 |