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
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
Related Environmental Data
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.
Where does this water quality data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and UCMR5 PFAS monitoring program. SDWIS tracks violations for all public water systems regulated under the Safe Drinking Water Act.
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.
Related
Data sourced from official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial
