Water quality in Westminster, South Dakota
Westminster is in Pennington County. 158 active public water systems serve the county; 52 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in Pennington County
66 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| Rapid Valley Sanitary District Rapid City |
11,408 | 0 | 2.6 mi | |
| Whispering Willows Billings, Black Hawk, Rapid City |
64 | 0 | 3.6 mi | |
| Box Elder Box Elder |
14,000 | 1 | 3.8 mi | |
| Ellsworth Afb Ellsworth Afb |
9,100 | 0 | 5.2 mi | |
| Prairie Acres South Garden City, Rapid City, Tualatin |
170 | 0 | 5.3 mi | |
| Prairie Acres LLC Garden City, Rapid City, Tualatin |
350 | 0 | 5.4 mi | |
| Country Road Estates Black Hawk, Spearfish |
112 | 0 | 5.4 mi | |
| Cedar Gulch 2 Piedmont, Rapid City |
40 | 0 | 5.5 mi | |
| Prairie Acres North Garden City, Rapid City, Tualatin |
288 | 0 | 5.7 mi | |
| Cedar Gulch 1 Rapid City |
45 | 1 | 6.0 mi | |
| Happy Holiday Water Association Rapid City |
35 | 1 | 6.1 mi | |
| Rimrock Heights Homeowners Associati Rapid City |
35 | 0 | 6.1 mi | |
| Darlington Estates Rapid City |
25 | 2 | 6.1 mi | |
| Rapid City Rapid City |
72,009 | 0 | 6.1 mi | |
| Bridle Ridge Estates Piedmont |
38 | 0 | 6.2 mi | |
| The Ranch at Black Gap Rapid City |
375 | 0 | 7.6 mi | |
| Sunset Ranch Piedmont, Rapid City |
263 | 0 | 7.9 mi | |
| Ponderosa Water Company Rapid City |
25 | 0 | 9.5 mi | |
| Pineview Water Association Rapid City |
25 | 0 | 9.5 mi | |
| Hart Ranch Rapid City |
468 | 0 | 9.6 mi | |
| Carriage Hills Rapid City |
267 | 0 | 10.1 mi | |
| Chapel Lane Water Company Rapid City |
1,200 | 0 | 10.1 mi | |
| Happy Holiday RV Resort Mercer Island, Rapid City |
264 | 0 | 10.3 mi | |
| Ponderosa Mobile Home Ranch Rapid City |
150 | 0 | 10.6 mi | |
| B & J Mobile Home Park Rapid City |
135 | 0 | 10.7 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 |
|---|---|---|---|---|
|
Happy Trails Homeowners Black Hawk, Rapid City |
54 | 1 | 0 | |
|
Rapid City RV Park and CG Rapid City |
236 | 0 | 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 | |
|
Rapid City South RV Park Black Hawk, Rapid City |
440 | 0 | 0 | |
|
Canyon Lake Resort Rapid City |
60 | 2 | 0 | |
|
Lake Park Campground Rapid City |
65 | 0 | 0 | |
|
Black Hawk Creek RV Park Black Hawk, Rapid City |
158 | 0 | 0 | |
|
Chapel in the Hills Rapid City |
200 | 1 | 1 | |
|
Cedar Canyon Wesleyan Camp Rapid City |
62 | 1 | 0 | |
|
Shipwrecks Bar and Grill Rapid City |
35 | 2 | 2 | |
|
Reptile Gardens INC Rapid City |
1,169 | 0 | 0 | |
|
Dinosaur Museum Rapid City |
500 | 2 | 2 | |
|
Rushmore Candy Company Rapid City |
90 | 3 | 2 | |
|
Athletic Club of the Black Hills Rapid City |
100 | 1 | 1 | |
|
Bear Country USA Black Hawk, Rapid City |
1,021 | 0 | 0 | |
|
Htr Black Hills Resorts Rapid City |
180 | 1 | 1 | |
|
Pine Haven Venue and Lodging Black Hawk, Rapid City, Wall |
128 | 0 | 0 | |
|
Rockerville Motel and Cabins Rapid City |
45 | 0 | 0 | |
|
Rockerville Gold Nugget Lodge Rapid City |
52 | 0 | 0 | |
|
The Gaslight Rapid City, Rockerville |
300 | 0 | 0 | |
|
Storm Mountain Center Mitchell, Rapid City |
80 | 1 | 1 | |
|
Salvation Army Camp Rapid City |
25 | 0 | 0 | |
|
Silver Mountain Cabins Rapid City |
29 | 0 | 0 | |
|
Rockerville Pud Piedmont, Rapid City |
25 | 0 | 0 | |
|
Pete Lein & Sons Shooting Range Piedmont |
25 | 0 | 0 | |
|
Rimrock Tavern Lyndon Bolt Boxelder |
35 | 3 | 1 | |
|
Hillside Country Cabins Rapid City |
54 | 1 | 1 | |
|
Black Hills Children's Home Rapid City, Sioux Falls |
105 | 0 | 0 | |
|
Rush Mountain Adventure Park Keystone |
300 | 0 | 0 | |
|
Rushmore Mountain Coaster Keystone |
300 | 0 | 0 | |
|
Placerville Camp Rapid City |
84 | 1 | 1 | |
|
Cosmos Mystery Area Columbus, Rapid City |
600 | 0 | 0 | |
|
Blue Wing Recreation Area Hill City, Rapid City |
200 | 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 | |
|
Usfs-Bhnf Chipper/thumper CG Black Hawk, Custer, Overland Park |
56 | 0 | 0 | |
|
Pactola Water Association Black Hawk, Hill City |
25 | 0 | 0 | |
|
Powder House Lodge Keystone, Rapid City |
700 | 0 | 0 | |
|
Pactola Pines Store Custer, Rapid City |
500 | 1 | 0 | |
|
Usfs-Bhnf Pactola Campground Black Hawk, Custer, Overland Park |
166 | 0 | 0 | |
|
Holy Smoke Cabins Keystone |
37 | 0 | 0 | |
|
Horse Creek Resort-Lower Wells Rapid City |
90 | 0 | 0 | |
|
Horse Creek Resort-Log Cabin Well Rapid City |
35 | 0 | 0 | |
|
Rustic Ridge Guest Cabins Keystone |
25 | 0 | 0 | |
|
NO Bad Days Campground Hill City |
60 | 2 | 0 | |
|
Kemp's Kamp East Keystone |
100 | 0 | 0 | |
|
Rushmore Tramway Adventures Keystone |
200 | 1 | 1 | |
|
Kemp's Kamp West Keystone |
68 | 0 | 0 |
About this data
Water systems are matched to Pennington County, nearest to Westminster 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.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 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.