PlainWater
Counties → South Dakota

Lawrence County, South Dakota

Water Systems
73
Population Served
25,648
Total Violations
6,945
1,387 health-based
PFAS Detected
0
of 2 tested

Violation Analysis

86.3%
Systems with Violations
95.1
Avg Violations per System
20.0%
Health-Based Violations

Water Source Types

GW
45 systems (62%)
SW
5 systems (7%)

PFAS Contamination

2
Systems Tested
0
PFAS Detected
0.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Lawrence South Dakota water systems by violation status, EPA SDWIS records.

No violations on record (4) One or more violations (46)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

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 -

Other Counties in South Dakota

Minnehaha County
15 systems · 254,737 served · 868 violations
Pennington County
157 systems · 140,305 served · 11,864 violations
Brookings County
12 systems · 41,264 served · 2,574 violations
Brown County
21 systems · 38,081 served · 1,750 violations
Lincoln County
8 systems · 35,801 served · 350 violations
Hughes County
6 systems · 27,114 served · 317 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Lawrence County? ▼
Lawrence County has 6,945 total drinking water violations across 73 water systems, of which 1,387 are health-based violations. 86.3% of systems have at least one violation.
How many people get water from Lawrence County systems? ▼
Water systems in Lawrence County serve approximately 25,648 people through 73 public water systems.
Has PFAS been detected in Lawrence County water? ▼
Of 2 water systems tested for PFAS in Lawrence County, 0 had PFAS detected (0.0% detection rate).
What types of water sources supply Lawrence County? ▼
Water systems in Lawrence County use GW (45 systems), SW (5 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 20.0% of Lawrence County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

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

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.