Water quality for ZIP code 57780
Pennington County, South Dakota, one of 9 ZIP codes in the county. 158 active public water systems serve the county; 52 had an EPA violation in the past three years.
Most likely your provider
Other community water systems in Pennington County
66 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Wall Wall |
699 | 0 | 19.7 mi | |
| Wasta Wall, Wasta |
84 | 1 | 20.3 mi | |
| Owanka Rural Water System Black Hawk, Owanka |
52 | 0 | 20.3 mi | |
| New Underwood New Underwood |
679 | 0 | 27.0 mi | |
| Copper Oaks I New Underwood, Rapid City |
64 | 2 | 27.6 mi | |
| Sunset Ranch Piedmont, Rapid City |
263 | 0 | 30.0 mi | |
| Cedar Gulch 1 Rapid City |
45 | 1 | 30.4 mi | |
| Cedar Gulch 2 Piedmont, Rapid City |
40 | 0 | 30.9 mi | |
| Wr/lj Creighton Project Murdo, Philip |
1,170 | 0 | 33.9 mi | |
| Valley Heights Estates INC Sturgis, Westminster |
320 | 1 | 35.3 mi | |
| The Ranch at Black Gap Rapid City |
375 | 0 | 35.6 mi | |
| Box Elder Box Elder |
14,000 | 1 | 36.5 mi | |
| Rapid Valley Sanitary District Rapid City |
11,408 | 0 | 37.0 mi | |
| Ellsworth Afb Ellsworth Afb |
9,100 | 0 | 37.7 mi | |
| Whispering Willows Billings, Black Hawk, Rapid City |
64 | 0 | 38.0 mi | |
| Hart Ranch Rapid City |
468 | 0 | 38.3 mi | |
| Rushmore Ranch Estates Black Hawk, Hot Springs |
168 | 0 | 40.3 mi | |
| Rapid City Rapid City |
72,009 | 0 | 40.5 mi | |
| Happy Holiday RV Resort Mercer Island, Rapid City |
264 | 0 | 40.5 mi | |
| Happy Holiday Water Association Rapid City |
35 | 1 | 40.5 mi | |
| Rimrock Heights Homeowners Associati Rapid City |
35 | 0 | 40.5 mi | |
| Darlington Estates Rapid City |
25 | 2 | 40.5 mi | |
| Prairie Acres South Garden City, Rapid City, Tualatin |
170 | 0 | 40.6 mi | |
| Prairie Acres LLC Garden City, Rapid City, Tualatin |
350 | 0 | 40.7 mi | |
| Bridle Ridge Estates Piedmont |
38 | 0 | 40.7 mi |
Non-community systems in Pennington County (91: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sobos RV Park Scenic |
83 | 1 | 0 | |
|
Rapid City South RV Park Black Hawk, Rapid City |
440 | 0 | 0 | |
|
Shipwrecks Bar and Grill Rapid City |
35 | 2 | 2 | |
|
Happy Trails Homeowners Black Hawk, Rapid City |
54 | 1 | 0 | |
|
Reptile Gardens INC Rapid City |
1,169 | 0 | 0 | |
|
Dinosaur Museum Rapid City |
500 | 2 | 2 | |
|
Rushmore Candy Company Rapid City |
90 | 3 | 2 | |
|
Rapid City RV Park and CG Rapid City |
236 | 0 | 0 | |
|
Rush Mountain Adventure Park Keystone |
300 | 0 | 0 | |
|
Rushmore Mountain Coaster Keystone |
300 | 0 | 0 | |
|
Bear Country USA Black Hawk, Rapid City |
1,021 | 0 | 0 | |
|
Htr Black Hills Resorts Rapid City |
180 | 1 | 1 | |
|
Athletic Club of the Black Hills Rapid City |
100 | 1 | 1 | |
|
Chapel in the Hills Rapid City |
200 | 1 | 1 | |
|
Lake Park Campground Rapid City |
65 | 0 | 0 | |
|
Canyon Lake Resort Rapid City |
60 | 2 | 0 | |
|
Coca Cola Bottling CO Rapid City |
75 | 0 | 0 | |
|
Gcc Dacotah East/west/north Rapid City |
100 | 0 | 0 | |
|
Gcc Dacotah-North Quarry Well Rapid City |
35 | 0 | 0 | |
|
Rockerville Motel and Cabins Rapid City |
45 | 0 | 0 | |
|
Pine Haven Venue and Lodging Black Hawk, Rapid City, Wall |
128 | 0 | 0 | |
|
The Gaslight Rapid City, Rockerville |
300 | 0 | 0 | |
|
Black Hills Children's Home Rapid City, Sioux Falls |
105 | 0 | 0 | |
|
Rockerville Gold Nugget Lodge Rapid City |
52 | 0 | 0 | |
|
Cedar Canyon Wesleyan Camp Rapid City |
62 | 1 | 0 | |
|
Storm Mountain Center Mitchell, Rapid City |
80 | 1 | 1 | |
|
Silver Mountain Cabins Rapid City |
29 | 0 | 0 | |
|
Black Hawk Creek RV Park Black Hawk, Rapid City |
158 | 0 | 0 | |
|
Hillside Country Cabins Rapid City |
54 | 1 | 1 | |
|
Rushmore Under Canvas Black Hawk, Bozeman, Keystone |
113 | 0 | 0 | |
|
Rushmore Tramway Adventures Keystone |
200 | 1 | 1 | |
|
Cosmos Mystery Area Columbus, Rapid City |
600 | 0 | 0 | |
|
Powder House Lodge Keystone, Rapid City |
700 | 0 | 0 | |
|
Kemp's Kamp East Keystone |
100 | 0 | 0 | |
|
Holy Smoke Cabins Keystone |
37 | 0 | 0 | |
|
Kemp's Kamp West Keystone |
68 | 0 | 0 | |
|
Kemp's Kamp Upper Keystone |
30 | 0 | 0 | |
|
Kemp's Kamp Middle Keystone |
25 | 0 | 0 | |
|
Nps-Mount Rushmore National Memorial Keystone |
4,100 | 0 | 0 | |
|
American Pines Cabins Keystone |
40 | 3 | 0 | |
|
Camp Judson Keystone, Sioux Falls |
100 | 2 | 1 | |
|
Rustic Ridge Guest Cabins Keystone |
25 | 0 | 0 | |
|
Blue Wing Recreation Area Hill City, Rapid City |
200 | 0 | 0 | |
|
Salvation Army Camp Rapid City |
25 | 0 | 0 | |
|
Usfs-Bhnf Horsethief Lake CG Black Hawk, Custer, Overland Park |
79 | 0 | 0 | |
|
Usfs-Bhnf Chipper/thumper CG Black Hawk, Custer, Overland Park |
56 | 0 | 0 | |
|
Usfs-Bhnf Woodsy/smokey CG Black Hawk, Custer, Overland Park |
145 | 0 | 0 | |
|
Usfs-Bhnf Rocky Campground Black Hawk, Custer, Overland Park |
41 | 0 | 0 | |
|
Rimrock Tavern Lyndon Bolt Boxelder |
35 | 3 | 1 | |
|
Horse Creek Resort-Lower Wells Rapid City |
90 | 0 | 0 |
About this data
Water systems are matched to Pennington County, the county this ZIP code lies in, nearest to the ZIP code's centre first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system or, for systems without one, to the centre of the first town EPA lists the system as serving, from Census Bureau place files or the centre of the first town EPA lists the system as serving, from Census Bureau county subdivision files.
ZIP code areas and town boundaries come from the U.S. Census Bureau's 2020 ZCTA files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The South Dakota records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.