Home/ Directory/ SD/ CUSTER

Water system · PWSID SD4600101

CUSTER

CUSTER, SD · ~1,919 people served

Check your exact address → CUSTER overview
100
Excellent
PurityRadar safety score

PWSID

SD4600101

State

South Dakota

City

CUSTER

Population served

1,919

Primary source

Groundwater

Score history

No change since tracking began Jun 18, 2026.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 100

2 score updates logged since tracking began Jun 18, 2026. Each future EPA re-score adds a point.

PFAS & contaminant readings

No PFAS detections are on record for this system from EPA’s UCMR5 monitoring (2023–25). Absence of a detection isn’t a guarantee — not every system was sampled, and this dataset doesn’t cover other contaminants.

Violations & enforcement

37

Violations on record

0

Unaddressed

0

Health-based

15

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Nov 1999. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Jul 1998 Resolved
Monitoring & reporting · Lead & Copper Rule began Jul 1996 Resolved
Monitoring & reporting · EPA contaminant 2042 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2051 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2065 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2067 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2306 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2050 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2015 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2383 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2035 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2039 began Jan 1996 Resolved

Recent enforcement actions

  • State action · SIF Nov 1999
  • State action · SIE Sep 1999
  • State action · SOX May 1999
  • State action · SOX Mar 1999
  • State action · SIF Jan 1999
  • State action · SIE Jan 1999
  • State action · SOX Jun 1997
  • State action · SIF Feb 1997

This profile is built from EPA public records for system SD4600101 — SDWIS violations and UCMR5 PFAS sampling. The score is system-level and can’t account for your home’s plumbing (older pipes can add lead at the tap). For health decisions, check your exact address, read the utility’s Consumer Confidence Report, and confirm with your provider.