RUSHMORE RANCH ESTATES

BLACK HAWK, SD · ~168 people served

Check your exact address → BLACK HAWK overview

100

Excellent

PurityRadar safety score

PWSID

SD4602212

State

South Dakota

City

BLACK HAWK

Population served

168

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

Violations on record

Unaddressed

Health-based

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Sep 2017. Official EPA record →

Monitoring & reporting · Lead & Copper Rule began Oct 2016 Resolved

Monitoring · Lead & Copper Rule began Sep 2016 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began Aug 2016 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began Aug 2016 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2016 Resolved

Treatment technique · EPA contaminant 0400 health-based began Feb 2015 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2014 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 2002 Resolved

Monitoring & reporting · EPA contaminant 2992 began Apr 2002 Resolved

Monitoring & reporting · EPA contaminant 2977 began Apr 2002 Resolved

Monitoring & reporting · EPA contaminant 2987 began Apr 2002 Resolved

Monitoring & reporting · EPA contaminant 2380 began Apr 2002 Resolved

Recent enforcement actions

State action · SOX Sep 2017
State action · SOX Sep 2017
State action · SOX Sep 2017
State action · SIF Mar 2017
State action · SOX Dec 2016
State action · SIE Nov 2016
State action · SIF Nov 2016
State action · SIF Nov 2016

This profile is built from EPA public records for system SD4602212 — 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.