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Water system · PWSID SD4600915

CROOKED OAKS CANYON HOMEOWNERS

BLACK HAWK, SD · ~70 people served

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

PWSID

SD4600915

State

South Dakota

City

BLACK HAWK

Population served

70

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

20

Violations on record

0

Unaddressed

10

Health-based

30

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jun 2010. Official EPA record →

Treatment technique · EPA contaminant 0400 health-based began Mar 2010 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jun 2000 Resolved
Monitoring & reporting · Total coliform began Jun 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2000 Resolved
Max contaminant level (MCL) · Antimony health-based began Apr 1999 Resolved
Max contaminant level (MCL) · Antimony health-based began Jan 1999 Resolved
Max contaminant level (MCL) · Antimony health-based began Oct 1998 Resolved
Max contaminant level (MCL) · Antimony health-based began Jul 1998 Resolved
Monitoring & reporting · EPA contaminant 2031 began Apr 1996 Resolved
Monitoring & reporting · EPA contaminant 2041 began Apr 1996 Resolved
Monitoring & reporting · EPA contaminant 2110 began Apr 1996 Resolved

Recent enforcement actions

  • State action · SOX Jun 2010
  • State action · SIA Apr 2010
  • State action · SOX Jan 2001
  • State action · SOX Jan 2001
  • State action · SOX Jan 2001
  • State action · SOX Jan 2001
  • State action · SOX Jan 2001
  • State action · SIF Jul 2000

This profile is built from EPA public records for system SD4600915 — 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.