We found 258 public water systems that could serve the same population as Rockerville Trading Post (ordered by population size).
| Name | Areas served | Population served | Contaminant count | Violation count |
|---|---|---|---|---|
| Rapid City | Rapid City | 66,481 | 124 | 6 |
| Rapid Valley Sanitary District | Rapid City | 9,075 | 40 | 7 |
| Box Elder | Box Elder | 8,300 | 0 | 135 |
| Ellsworth Afb | Ellsworth Afb | 6,827 | 0 | 6 |
| Nps-mount Rushmore National Memorial | Keystone | 4,100 | 0 | 22 |
| Colonial Pine Hills Sanitary Distric | Rapid City | 1,200 | 0 | 23 |
| Chapel Lane Water Company | Piedmont, Rapid City | 1,200 | 0 | 4 |
| Rapid City Regional Airport | Rapid City | 1,200 | 0 | 0 |
| Reptile Gardens Inc | Rapid City | 1,169 | 0 | 6 |
| WR/LJ - CREIGHTON PROJECT | Murdo, Philip | 1,082 | 0 | 0 |
| Northdale Sanitary District | Black Hawk, Piedmont | 1,075 | 0 | 4 |
| Bear Country Usa | Black Hawk, Rapid City | 1,021 | 0 | 79 |
| Windmill Restaurant | County of Pennington | 1,001 | 0 | 0 |
| Prairie Berry Winery | Hill City | 1,000 | 0 | 1 |
| Hill City | Hill City | 950 | 0 | 98 |
| Black Hills Greyhound Track | County of Pennington | 900 | 0 | 0 |
| Palmer Gulch Lodge/mt Rushmore Koa | Black Hawk, Hill City | 850 | 0 | 4 |
| Wall | Wall | 766 | 0 | 28 |
| New Underwood | New Underwood | 750 | 0 | 37 |
| Cosmos Mystery Area | Rapid City | 600 | 0 | 10 |
| Cph - Countryside South | County of Pennington | 576 | 0 | 0 |
| Flying J Travel Plaza | Black Hawk, Rapid City | 560 | 0 | 51 |
| Usfs-bhnf Pactola Visitor Center | Custer, Spearfish | 535 | 0 | 23 |
| Country Store At The Forks | Rapid City | 500 | 0 | 2 |
| Rushmore Tramway Adventures | Keystone | 500 | 0 | 8 |
| Rushmore Waterslide | County of Pennington | 500 | 0 | 0 |
| The Ranch Amusement Park | Rapid City | 500 | 0 | 0 |
| Countryside | Rapid City | 492 | 0 | 0 |
| Hisega Meadows Water Inc | Rapid City | 486 | 0 | 5 |
| Tee Pee Campground | Rapid City | 440 | 0 | 11 |
| Springbrook Acres | County of Pennington | 425 | 0 | 0 |
| South Canyon Country Estates | Rapid City | 420 | 0 | 10 |
| Hart Ranch | Rapid City | 390 | 0 | 80 |
| Keystone | Keystone | 370 | 0 | 13 |
| Rafter-j Bar Ranch | Hill City | 350 | 0 | 0 |
| Village Campground | County of Pennington | 350 | 0 | 0 |
| Prairie Acres Llc | Rapid City | 325 | 0 | 56 |
| Pine Grove | Rapid City | 312 | 0 | 13 |
| The Ranch At Black Gap | Rapid City | 305 | 0 | 1 |
| Rush Mountain Adventure Park | Keystone | 300 | 0 | 8 |
| Powder House Lodge | Keystone, Piedmont | 300 | 0 | 5 |
| Rushmore Mountain Coaster | Keystone | 300 | 0 | 0 |
| Prairie Acres North | Rapid City | 292 | 0 | 101 |
| Carriage Hills | Piedmont, Rapid City | 267 | 0 | 5 |
| Happy Holiday Rv Resort | Mercer Island, Rapid City | 264 | 0 | 106 |
| Rainbow Water Company | Piedmont | 258 | 0 | 0 |
| YMCA GIRAFFIC PARK | Rapid City | 250 | 0 | 20 |
| Federal Beef Processors | County of Pennington | 250 | 0 | 0 |
| Plainsview Mobile Manor | Box Elder, Orangevale, Piedmont | 210 | 0 | 119 |
| Crooked Creek Campground-north Well | Hill City | 203 | 0 | 20 |
| Blue Wing Recreation Area | Hill City, Rapid City | 200 | 0 | 1 |
| Chapel In The Hills | Rapid City | 200 | 0 | 3 |
| Medicine Mountain Scout Camp | Black Hawk, Rapid City | 200 | 0 | 13 |
| Mystery Mountain Resort | Rapid City | 200 | 0 | 25 |
| Rushmore View Motel | Keystone | 200 | 0 | 0 |
| Dianne S Gift Corral | Hill City | 200 | 0 | 0 |
| Rapid City Rv Park And Cg | Rapid City | 188 | 0 | 50 |
| Oaks Water Users Association | Piedmont, Rapid City | 180 | 0 | 65 |
| Enchanted Hills Water Association | County of Pennington | 175 | 0 | 0 |
| Edelweiss Mountain Improvement Assoc | Black Hawk, Rapid City | 172 | 0 | 195 |
| Pine Cliff Estates | Black Hawk, Rapid City | 170 | 0 | 51 |
| Camp Ranchero | County of Pennington | 170 | 0 | 0 |
| Prairie Acres South | Rapid City | 168 | 0 | 126 |
| Strat-o-rim Estates Water Company | Rapid City | 165 | 0 | 234 |
| Cimarron Park | Black Hawk, Cedaredge | 160 | 0 | 123 |
| Battle Creek Campgd, Keystone | County of Pennington | 160 | 0 | 0 |
| Memorial Christian School | County of Pennington | 153 | 0 | 0 |
| Westberry Trails Water Users Assoc | Piedmont, Rapid City | 152 | 0 | 75 |
| Sunset Ranch | Piedmont, Rapid City | 150 | 0 | 23 |
| Black Hills Maze | Rapid City | 150 | 0 | 1 |
| Cleghorn Springs | County of Pennington | 150 | 0 | 0 |
| Four Presidents Best Western | Keystone | 150 | 0 | 0 |
| Miner`s Restaurant | County of Pennington | 150 | 0 | 0 |
| Sioux San Hospital | County of Pennington | 150 | 0 | 0 |
| Horse Thief Campground | Custer, Hill City | 140 | 0 | 5 |
| B & J Mobile Home Park | Piedmont | 135 | 0 | 2 |
| Creekside Country Resort | Hill City | 130 | 0 | 8 |
| Rushmore Ranch Estates | Black Hawk | 128 | 0 | 31 |
| High Country-rs East Well | Hill City | 125 | 0 | 0 |
| High Country-hc West Well | Hill City | 125 | 0 | 1 |
| Dinosaur Museum | Columbus, Rapid City | 125 | 0 | 13 |
| Rushmore Inn And Suites | Rapid City | 125 | 0 | 0 |
| Marine Life Aquarium | County of Pennington | 124 | 0 | 0 |
| Crooked Creek Campground-south Well | Hill City | 120 | 0 | 0 |
| The Lodge At Mount Rushmore | Keystone, St. Paul | 120 | 0 | 0 |
| Usfs-bhnf Pactola Campground | Custer, Hill City | 117 | 0 | 0 |
| D&j Mobile Home Park | Black Hawk, Spearfish | 112 | 0 | 0 |
| Camp Judson | Keystone, Sioux Falls | 110 | 0 | 0 |
| Mesa View Water Association | Rapid City, Summerset | 100 | 0 | 0 |
| Gcc Dacotah - East/west/north | Rapid City | 100 | 0 | 0 |
| Rapid City Athletic Club | Rapid City | 100 | 0 | 0 |
| Johnson Siding/rimrock Tavern | Rapid City | 100 | 0 | 0 |
| Sgt. Preston's Pizza | Rapid City | 100 | 0 | 0 |
| Quinn | County of Pennington | 100 | 0 | 0 |
| Farmer Supply Company | Rapid City | 100 | 0 | 0 |
| Gaslight Restaurant & Lounge | Rapid City | 100 | 0 | 0 |
| Warren Wtr Co Inc, Warren Reub | County of Pennington | 100 | 0 | 0 |
| Miner`s Motel | County of Pennington | 100 | 0 | 0 |
| Dot Rest Area 516a - S. Berry | County of Pennington | 100 | 0 | 0 |
| The Outpost | Rapid City | 100 | 0 | 0 |
| Battle Creek Camp | County of Pennington | 100 | 0 | 0 |
| Black Hills Children's Home | Piedmont, Rapid City, Sioux Falls | 95 | 0 | 0 |
| Crm Well | County of Pennington | 92 | 0 | 0 |
| Ponderosa Ridge | Rapid City | 90 | 0 | 0 |
| Horse Creek Inn-restaurant Well | Rapid City | 90 | 0 | 0 |
| Wagon Wheel Mobile Home Park | Rapid City | 90 | 0 | 0 |
| Whispering Willows | Black Hawk, Piedmont | 90 | 0 | 0 |
| Horsethief Campground-original Well | County of Pennington | 90 | 0 | 0 |
| Spring Canyon Water Company | Piedmont, Rapid City | 89 | 0 | 0 |
| Creative Kids Too Preschool & Daycar | Piedmont, Rapid City | 87 | 0 | 0 |
| Placerville Camp | Rapid City | 84 | 0 | 0 |
| Usfs-bhnf North Beach And Pa | County of Pennington | 82 | 0 | 0 |
| Wasta | Wall, Wasta | 80 | 0 | 0 |
| Wildwood Water Association | Rapid City | 80 | 0 | 0 |
| Usfs-bhnf Horsethief Lake Cg | Custer, Hill City | 79 | 0 | 0 |
| Pine Rest Cabins | Hill City | 79 | 0 | 0 |
| Terra Cotta Estates | Piedmont, Rapid City | 75 | 0 | 0 |
| Coca Cola Bottling Co | Rapid City | 75 | 0 | 0 |
| Ponderosa Mobile Home Ranch | Rapid City | 75 | 0 | 0 |
| Gas Light | Piedmont, Rockerville | 75 | 0 | 0 |
| Thrall Mtn. Property Owners Associat | Black Hawk, Rapid City | 70 | 0 | 0 |
| Calvary Baptist Church & Schoo | Rapid City | 70 | 0 | 0 |
| Mountain View Lodge | Hill City | 68 | 0 | 0 |
| Sheridan Lake Highlands | Piedmont, Rapid City | 66 | 0 | 0 |
| Siphon Hill Water Association | Rapid City | 65 | 0 | 0 |
| Copper Oaks I | Piedmont, Rapid City | 64 | 0 | 0 |
| Cedar Canyon Wesleyan Camp | Rapid City | 62 | 0 | 0 |
| Canyon Lake Resort | Rapid City | 60 | 0 | 0 |
| Rushmore Hockey Association | Rapid City | 60 | 0 | 0 |
| Black Hills Children's Center - Scho | County of Pennington | 60 | 0 | 0 |
| Black Hills Cabins And Motel @ Quail | Hill City | 59 | 0 | 0 |
| High Meadows Ranchettes | Black Hawk, Rapid City | 58 | 0 | 0 |
| Spring Creek Inn | Hill City | 56 | 0 | 0 |
| Cavalry Trails Homeowner Association | Piedmont, Rapid City | 55 | 0 | 0 |
| Owanka Rural Water System | Black Hawk, Owanka | 52 | 0 | 0 |
| Calway Campground | County of Pennington | 52 | 0 | 0 |
| Canyon Springs Preserve Hoa | Black Hawk, Rapid City | 50 | 0 | 0 |
| Silver Dollar Saloon | Hill City | 50 | 0 | 0 |
| Lakeside Water Users District | Owanka | 50 | 0 | 0 |
| Indian West/smokehouse Ii/gunv | Rapid City | 50 | 0 | 0 |
| B & B Trailer Court | County of Pennington | 50 | 0 | 0 |
| Triple R Ranch Campground | Rapid City | 50 | 0 | 0 |
| Rushmore Bar | County of Pennington | 50 | 0 | 0 |
| Olde Glory Fireworks | County of Pennington | 50 | 0 | 0 |
| Cheyenne River Campgd, Wasta | County of Pennington | 50 | 0 | 0 |
| Restway Travel Park | Hermosa | 50 | 0 | 0 |
| Sunnyside Mobile Home Court | Rapid City | 50 | 0 | 0 |
| Rushmore Shadows | County of Pennington | 50 | 0 | 0 |
| Dakotah Spirit Resort | County of Pennington | 50 | 0 | 0 |
| Stan Houston Equipment Co | County of Pennington | 50 | 0 | 0 |
| Hillside Country Cabins | Rapid City | 49 | 0 | 0 |
| Usfs-bhnf Chipper/thumper Cg | Custer, Hill City | 48 | 0 | 0 |
| Usfs-bhnf Woodsy/smokey Cg | Custer, Hill City | 48 | 0 | 0 |
| Usfs-bhnf Rocky Campground | Custer, Hill City | 48 | 0 | 0 |
| Kemp's Kamp East | Keystone | 48 | 0 | 0 |
| West River - Lyman Jones Rws | County of Pennington | 48 | 0 | 0 |
| Boxelder High Country Association | Rapid City | 47 | 0 | 0 |
| Golden Hills Homes | Piedmont, Rapid City | 47 | 0 | 0 |
| Robin's Roost Cabins | Hill City | 47 | 0 | 0 |
| Cedar Gulch I | Rapid City | 45 | 0 | 0 |
| Whispering Pines Water Association | Rapid City | 45 | 0 | 0 |
| Kemp's Kamp Middle | Keystone | 43 | 0 | 0 |
| Whispering Pines Campground | Rapid City | 41 | 0 | 0 |
| Holy Smoke Cabins | Keystone | 40 | 0 | 0 |
| Kemp's Kamp West | Keystone, Rapid City | 40 | 0 | 0 |
| Usfs-bhnf Oreville Campground | Custer, Hill City | 40 | 0 | 0 |
| Mountain Meadow Resort | Hill City | 40 | 0 | 0 |
| Berry Patch Campground | County of Pennington | 40 | 0 | 0 |
| Westview Water C/o Ww Lage | Rapid City | 40 | 0 | 0 |
| Holy Smoke Restaurant | Keystone | 40 | 0 | 0 |
| Hill City Visitor Center | Hill City | 38 | 0 | 0 |
| Pactola Pines Store | Custer, Rapid City | 35 | 0 | 0 |
| Gcc Dacotah-north Quarry Well | Rapid City | 35 | 0 | 0 |
| Rimrock Ridge Water Association | Rapid City | 35 | 0 | 0 |
| Scenic, Town Of | County of Pennington | 35 | 0 | 0 |
| Us West | County of Pennington | 35 | 0 | 0 |
| High Sheridan Ranch | Black Hawk, Rapid City | 33 | 0 | 0 |
| Highland Hills | Rapid City | 32 | 0 | 0 |
| Camelot Motel | County of Pennington | 32 | 0 | 0 |
| Ponderosa Park | Rapid City | 31 | 0 | 0 |
| Norris Peak Water Users Assoc | Black Hawk, Rapid City | 30 | 0 | 0 |
| Rustic Ridge Guest Cabins | Keystone | 30 | 0 | 0 |
| Hidden Valley Water Association Inc | Rapid City | 30 | 0 | 0 |
| Cottonwood Grove Mobile Home Park | New Underwood | 30 | 0 | 0 |
| Storm Mountain Center | Mitchell, Rapid City | 30 | 0 | 0 |
| Shipwreck Lee's | Rapid City | 30 | 0 | 0 |
| Black Hills Power & Light | Rapid City | 30 | 0 | 0 |
| Miner`s Rv Park | County of Pennington | 30 | 0 | 0 |
| Vista Hills | County of Pennington | 30 | 0 | 0 |
| Village Country Store | County of Pennington | 30 | 0 | 0 |
| Red Top School | New Underwood | 30 | 0 | 0 |
| Deer Huts Motel | County of Pennington | 30 | 0 | 0 |
| Usfs-bhnf Black Fox Campground | County of Pennington | 29 | 0 | 0 |
| Usfs-bhnf Dutchman Campground | Custer, Hill City | 28 | 0 | 0 |
| Reynolds Court | Spearfish | 28 | 0 | 0 |
| Rimrock Heights Homeowners Associati | Rapid City | 28 | 0 | 0 |
| Black Hills Children's Center - Hous | County of Pennington | 28 | 0 | 0 |
| Cedar Gulch Ii | Piedmont, Rapid City | 27 | 0 | 0 |
| Wildcat Valley | County of Pennington | 27 | 0 | 0 |
| Leo's Trailer Court | County of Pennington | 27 | 0 | 0 |
| Kemp's Kamp Upper | Keystone | 26 | 0 | 0 |
| Capps Trailer Court | County of Pennington | 26 | 0 | 0 |
| Whispering Winds Cottages | Hill City, Rapid City | 25 | 0 | 0 |
| Ponderosa Water Company | Piedmont, Rapid City | 25 | 0 | 0 |
| Pineview Water Association | Piedmont, Rapid City | 25 | 0 | 0 |
| Lake Park Campground | Rapid City | 25 | 0 | 0 |
| Horse Creek Inn-cg Well | Rapid City | 25 | 0 | 0 |
| Horse Creek Inn-cabin Well | Rapid City | 25 | 0 | 0 |
| Moonshine Gulch Saloon | Hill City | 25 | 0 | 0 |
| Salvation Army Camp | Rapid City | 25 | 0 | 0 |
| Camp Rimrock - Presbytery Of South D | Onida, Rapid City | 25 | 0 | 0 |
| Pactola Water Association | Black Hawk, Rapid City | 25 | 0 | 0 |
| Founding Fathers At Independence Hal | Rapid City | 25 | 0 | 0 |
| Harney Camp, Inc. | Custer | 25 | 0 | 0 |
| Three Forks Campground And Rv Park | Hill City | 25 | 0 | 0 |
| Usfs-bhnf Jenny Gulch Picnic Area | County of Pennington | 25 | 0 | 0 |
| Usfs-bhnf Grizzly Bear Picnic Area | County of Pennington | 25 | 0 | 0 |
| Usfs-bhnf Bear Gulch Picnic Area | County of Pennington | 25 | 0 | 0 |
| Usfs-bhnf Elkhorn Spring Picnic Area | County of Pennington | 25 | 0 | 0 |
| Usfs-bhnf Lakeshore Picnic Are | Hill City | 25 | 0 | 0 |
| Usfs-bhnf Custer Trails Campground | County of Pennington | 25 | 0 | 0 |
| Usfs-bhnf Mountain City Picnic Area | County of Pennington | 25 | 0 | 0 |
| Gold Nugget Motel | County of Pennington | 25 | 0 | 0 |
| Motel Valley | Rapid City | 25 | 0 | 0 |
| Rochford Store | County of Pennington | 25 | 0 | 0 |
| Echo Valley Cabins | Keystone | 25 | 0 | 0 |
| Black Hills Packing Co. | Rapid City | 25 | 0 | 0 |
| Usfs-bhnf Reder Dwellings | Hill City | 25 | 0 | 0 |
| Usfs-bhnf Pactola Point #1 | County of Pennington | 25 | 0 | 0 |
| Usfs-bhnf Pactola Point #2 | County of Pennington | 25 | 0 | 0 |
| Usfs-bhnf Pactola Workcenter | County of Pennington | 25 | 0 | 0 |
| Usfs-bhnf Flynn Creek Pg | Rapid City | 25 | 0 | 0 |
| Usfs-bhnf Newton Lake Cg | Hill City | 25 | 0 | 0 |
| Wagon Wheel Lodge | Silver City | 25 | 0 | 0 |
| Twisted T Campground | County of Pennington | 25 | 0 | 0 |
| Valley Heights | Box Elder, Rapid City | 25 | 0 | 0 |
| Gas Light | Rapid City | 25 | 0 | 0 |
| Lantern Inn Motel | Hill City | 25 | 0 | 0 |
| Rimrock Free Evangelical Church | County of Pennington | 25 | 0 | 0 |
| Mountain Meadow Lot 2 Well | Hill City | 25 | 0 | 0 |
| Lightning Ridge | County of Pennington | 24 | 0 | 0 |
| Ponderosa Mountain Rustic Campground | County of Pennington | 24 | 0 | 0 |
| Covered Wagon Resort | County of Pennington | 21 | 0 | 0 |
| Usfs-bhnf Whitetail Campground | County of Pennington | 20 | 0 | 0 |
| Rockerville Wild West Campground | County of Pennington | 18 | 0 | 0 |
| Creekside Mountain Resort | Hill City | 15 | 0 | 0 |
| Old Home Campground | County of Pennington | 14 | 0 | 0 |
| Silver Mountain Lodge | County of Pennington | 12 | 0 | 0 |
| Lode Stone Motel | County of Pennington | 11 | 0 | 0 |
| G-bobs | County of Pennington | 10 | 0 | 0 |
| Usfs-bhnf Castle Peak Campground | County of Pennington | 10 | 0 | 0 |
| Usfs-bhnf Ditch Creek Campground | County of Pennington | 10 | 0 | 0 |
| Lazy S Campground | County of Pennington | 10 | 0 | 0 |
| Usfs-bhnf Willow Creek Horse Camp | County of Pennington | 8 | 0 | 0 |
| Sheridan Lake Marina | County of Pennington | 8 | 0 | 0 |
| Canyon Cafe | County of Pennington | 8 | 0 | 0 |
| Usfs-bhnf North Cove Group Cg | County of Pennington | 5 | 0 | 0 |
| Usfs-bhnf South Beach Picnic Area | County of Pennington | 5 | 0 | 0 |