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Water system · PWSID SD4602259

76 RANCH ESTATES

BLACK HAWK, SD · ~40 people served

Check your exact address → BLACK HAWK overview
100
Excellent
PurityRadar safety score

PWSID

SD4602259

State

South Dakota

City

BLACK HAWK

Population served

40

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

187

Violations on record

0

Unaddressed

4

Health-based

531

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Aug 2011. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Jan 2011 Resolved
Monitoring & reporting · EPA contaminant 3014 began Jun 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2009 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 2008 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 2008 Resolved
Other · EPA contaminant 7500 began Jul 2007 Resolved
Monitoring & reporting · Total coliform began Dec 2006 Resolved
Monitoring & reporting · Total coliform began Nov 2006 Resolved
Other · EPA contaminant 7500 began Oct 2006 Resolved
Monitoring & reporting · EPA contaminant 2067 began Oct 2006 Resolved
Monitoring & reporting · EPA contaminant 2051 began Oct 2006 Resolved
Monitoring & reporting · EPA contaminant 2065 began Oct 2006 Resolved

Recent enforcement actions

  • State action · SOX Aug 2011
  • State action · SIE Jan 2011
  • State action · SIF Jan 2011
  • State action · SIE Jul 2010
  • State action · SOX Jul 2010
  • State action · SOX Jul 2010
  • State action · SOX Jan 2010
  • State action · SIE Jul 2009

This profile is built from EPA public records for system SD4602259 — 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.