PlainWater

Lawrence County, South Dakota

SDWIS compliance plate

Sheet SD081 · Lawrence County 73 sys · 6,945 viol · #1530/3254

VIOL-SEVERE · HEALTH-LOW · RANK-MID · BELOW-PEER · PFAS-CLEAN · SRC-GW · SYS-MID · BOOK-FULL

  • VIOL-SEVERE 86.3% flagged
  • HEALTH-LOW 20.0% health
  • RANK-MID #1530/3254
  • BELOW-PEER 1.2 pp cleaner
  • PFAS-CLEAN 0.0% detect
  • SRC-GW GW lead 89%
  • SYS-MID 73 systems
  • BOOK-FULL 7/7 fields

Nearest flagged-rate peer: Edmunds County (+ 1.2 pp flagged-rate)

According to EPA SDWIS county population served used on /counties, Lawrence County ranks #1,530 of 3,254 counties by people served, and #7 of 65 counties in South Dakota. See methodology · corpus placement.

Lawrence County standing, lower-flagged corpus third

Flagged-system rate 86.3% is at or below the corpus lower third (≤ 92.7% flagged) across 2,973 counties with ≥3 SDWIS systems . Health-based share 20.0% is health-based share in the middle third (≤ 24.5%) . UCMR5 detect rate 0.0% is UCMR5 detect rate at or below the tested-pool lower third (≤ 0.0%) . Population served ranks #1,530 of 3,254 · #7 of 65 in South Dakota.

Flagged-rate neighbourhood around Lawrence County

Lowest/highest poles plus in-state counties nearest Lawrence County on % of SDWIS systems with ≥1 violation. Full ladder: /counties.

0% 20% 40% 60% 80% 100% Shannon · lowest Edmunds · near Brookings · near Buffalo · highest 50% 86.3% 87.5% 87.5% 91.7% 91.7% 100%

Source: EPA SDWIS (county aggregates) As of 2026-05-15

Water Systems

System Name Population Violations PFAS
Spearfish 12,193 19 Clean
Lead 2,982 10 -
Deadwood 1,156 15 -
Whitewood 879 68 -
Guadalajara Mexican Restaurant 630 129 -
Spearfish Canyon Resort LLC 492 60 -
Terry Trojan Water District 400 419 -
Mystic Hills Hideaway North 369 3 -
Mountain Plains 2 Homeowners Assoc 268 179 -
Spearfish KOA 256 2 -
Saint Onge Sewer & Water Co 255 185 -
Wharf Resources Water System 250 83 -
Sugar Shack 240 101 -
Powder House Pass 238 2 -
Boxelder Civilian Conservation Ctr 220 25 -
Boulder Park Water Users Association 200 73 -
Rendezvous Ranch 195 102 Clean
Lantern Estates 192 248 -
Walnut Park 180 219 -
Apple Springs Subdivision 180 6 -
Paradise Water Company LLC 178 2 -
Steel Wheel Campground and Convenien 166 0 -
Spearfish Valley Mobile Estates 163 26 -
Whitewood Forest Acres 160 6 -
Cheyenne Crossing Store 150 53 -
Black Hills Chairlift 150 12 -
Deer Mountain Sanitary District 125 263 -
Usfs-Bhnf Roubaix Lake Cg 124 12 -
Wild Bill's Campground 120 29 -
Spearfish Forest Products 120 0 -
Fish-N-Fry Campground 113 33 -
Ken's Trailer Court 110 67 -
Westfield Addition 104 188 -
Westview Homeowners Association 103 42 -
D & E Water Company 100 87 -
Boulder Canyon Country Club 100 52 -
Lewie's Burgers and Brews 100 55 -
Spearfish Meadows 87 386 -
Oak Mountain Country Estates 85 323 -
Lourie Lane Homeowners Assoc 75 361 -
Custer Crossing Cg and Cabins 75 18 -
Wild Turkey Estates II 70 0 -
Nemo Guest Ranch 65 169 -
Shirt Tail Gulch Development 65 622 -
Meadow Crest Sanitary District 63 130 -
Mystic Hills Hideaway South 63 0 -
Tomahawk Country Club-Clubhouse 60 60 -
Deberg Well Users Association 54 52 -
Hidden Valley Campground 50 67 -
Sunrise Homeowners Association 50 385 -

Compare beyond South Dakota

Lower-flagged peers for Lawrence County

Cross-state counties nearest Lawrence County on flagged-system share (86.3%) and cumulative violation count (6,945). In-state neighbours stay on the compliance plate above.

Similar flagged-system rate

Nearest cross-state counties by % of SDWIS systems with at least one violation on record.

4 peers

Similar violation load

Nearest cross-state counties by cumulative SDWIS violation count (all systems in the county).

4 peers
Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.