South Dakota
Lawrence County drinking water quality
74 active public water systems serve 27,244 people in Lawrence County. 60 are compliant, 14 had at least one EPA violation in the past three years, 0 are designated serious violators, and 1 carries a health flag.
Needs attention
Community water systems
42 systems, largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Spearfish Spearfish |
13,803 | 0 | 0 | |
|
Lead Lead |
2,982 | 0 | 0 | |
|
Deadwood Deadwood |
1,156 | 0 | 0 | |
|
Whitewood Whitewood |
879 | 0 | 0 | |
|
Terry Trojan Water District Black Hawk, Lead |
400 | 0 | 0 | |
|
Mountain Plains 2 Homeowners Assoc Spearfish |
268 | 3 | 1 | |
|
Saint Onge Sewer & Water CO Spearfish, St Onge |
255 | 0 | 0 | |
|
Boulder Park Water Users Association Rapid City, Sturgis |
200 | 0 | 0 | |
|
Rendezvous Ranch Black Hawk |
195 | 0 | 0 | |
|
Lantern Estates Spearfish, Whitewood |
192 | 0 | 0 | |
|
Apple Springs Subdivision Flower Mound, Hill City |
180 | 0 | 0 | |
|
Walnut Park Spearfish |
180 | 1 | 0 | |
|
Paradise Water Company LLC Lead, Sioux Falls |
178 | 0 | 0 | |
|
Spearfish Valley Mobile Estates Spearfish |
163 | 1 | 0 | |
|
Whitewood Forest Acres Whitewood |
160 | 1 | 0 | |
|
Deer Mountain Sanitary District Lead |
125 | 0 | 0 | |
|
Ken's Trailer Court Spearfish |
110 | 0 | 0 | |
|
Westfield Addition Spearfish |
104 | 0 | 0 | |
|
Westview Homeowners Association Spearfish |
103 | 0 | 0 | |
|
D & E Water Company Black Hawk, Spearfish |
100 | 0 | 0 | |
|
Spearfish Meadows Rapid City, Spearfish |
87 | 0 | 0 | |
|
Oak Mountain Country Estates Black Hawk, Deadwood |
85 | 0 | 0 | |
|
Lourie Lane Homeowners Assoc Spearfish |
75 | 0 | 0 | |
|
Wild Turkey Estates II Black Hawk, Spearfish |
70 | 0 | 0 | |
|
Spring Creek Preserve Spearfish |
68 | 1 | 0 | |
|
Shirt Tail Gulch Development Black Hawk, Sturgis |
65 | 0 | 0 | |
|
Meadow Crest Sanitary District Deadwood, Spearfish |
63 | 0 | 0 | |
|
Deberg Well Users Association Spearfish |
54 | 0 | 0 | |
|
Sunrise Homeowners Association Spearfish |
50 | 0 | 0 | |
|
Eagle Water Company Black Hawk, Lead |
48 | 0 | 0 | |
|
76 Ranch Estates Black Hawk, Sturgis |
40 | 0 | 0 | |
|
Pillar Peak Black Hawk, Deadwood, Scranton |
38 | 0 | 0 | |
|
Valhalla Addition Black Hawk, Sturgis |
38 | 0 | 0 | |
|
The Timbers Black Hawk, Spearfish |
33 | 0 | 0 | |
|
Wild Turkey Estates I Black Hawk, Spearfish |
33 | 0 | 0 | |
|
Golden Hills Subdivision Lead, Piedmont, Sioux Falls |
30 | 0 | 0 | |
|
Two Bit Ranch Estates Deadwood, Sioux Falls, Spearfish |
30 | 0 | 0 | |
|
Three Peaks Water Association Atkinson, Black Hawk |
28 | 0 | 0 | |
|
Centennial Hills Home Association Spearfish |
25 | 0 | 0 | |
|
Chris' Mobile Home Court Spearfish |
25 | 0 | 0 | |
|
Bicentennial Trailer Court Spearfish |
23 | 1 | 0 | |
|
Lead-Deadwood Sanitary District Deadwood |
0 | 0 | 0 |
Non-community systems (32: schools, campgrounds, workplaces, restaurants)
These systems serve places people visit rather than homes.
Inactive systems (62, no longer operating or reporting)
Kept for the record and excluded from the county totals above. Browse inactive systems.
About this data
Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.
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.