PlainWater
Counties → South Dakota

Custer County, South Dakota

Water Systems
51
Population Served
13,071
Total Violations
2,359
359 health-based
PFAS Detected
0
of 0 tested

Violation Analysis

64.7%
Systems with Violations
46.3
Avg Violations per System
15.2%
Health-Based Violations

Water Source Types

GW
50 systems (98%)

Compliance Snapshot

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

No violations on record (17) One or more violations (33)

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
Laughing Water Restaurant at Crazy H 2,055 81 -
Custer 1,919 112 -
Nps-Wind Cave National Park 1,404 11 -
Csp-Sylvan Lake 799 0 -
Csp-Game Lodge 541 0 -
Black Hawk Oil Company 500 22 -
Southern Black Hills Water 492 0 -
Hermosa-Old System 420 37 -
Csp-Blue Bell 413 0 -
Heartland Campground 395 28 -
Beaver Lake Campground 300 56 -
Csp-Bison Center 300 0 -
Csp-Wildlife Station Vc 297 0 -
Csp-Legion Lake 278 0 -
Csp-Center Lake & Playhouse 230 0 -
Nps-Jewel Cave National Monument 219 3 -
Spring Creek Acres 172 64 -
Custers Gulch RV Park-#1Sw 150 3 -
Custer-Mount Rushmore KOA-Rear/Cg 146 108 -
Custers Gulch RV Park-#2Ne 129 0 -
Buffalo Gap 126 514 -
Hermosa Water Users Association 108 102 -
Spokane Creek Cabins & Campground 100 17 -
Big Pine Campground 96 9 -
Heartland Country Ranchettes 95 2 -
Broken Arrow Horse Camp 92 20 -
Fort Welikit Family Campground 87 6 -
Csp-Stockade Lake Cg-South 83 0 -
Timber Ridge Campground 83 0 -
Battle Creek Camping Resort 79 1 -
Rock Ridge Court 74 607 -
Custer Mountain Campground 72 64 -
Fairburn Water Association 65 109 -
Csp-French Creek Horse Camp 61 15 -
Pringle 60 159 -
Usfs-Bhnf Bismark Lake Campground 57 24 -
Usfs-Bhnf Comanche Park Campground 55 21 -
Csp-Park Shop 50 0 -
Camp Bob Marshall 50 27 -
Csp-Hidden Valley 45 71 -
Csp-Stockade Lake Cg-North 44 0 -
Four Mile Old West Town 43 0 -
North Hermosa Wud 40 3 -
Paramount Point 40 0 -
Gold Valley Camp 39 29 -
Outlaw Ranch 35 7 -
Roost Resort - East Well 30 0 -
Calamity Peak Lodge 28 25 -
Roost Resort - Campground Well 25 2 -
Custer-Mount Rushmore KOA-Front/Offi 25 0 -

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 Custer County? ▼
Custer County has 2,359 total drinking water violations across 51 water systems, of which 359 are health-based violations. 64.7% of systems have at least one violation.
How many people get water from Custer County systems? ▼
Water systems in Custer County serve approximately 13,071 people through 51 public water systems.
Has PFAS been detected in Custer County water? ▼
No PFAS testing data is available for water systems in Custer County.
What types of water sources supply Custer County? ▼
Water systems in Custer County use GW (50 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. 15.2% of Custer 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.