BLACK HAWK WATER USER DISTRICT

BLACK HAWK, SD · ~4,500 people served

Check your exact address → BLACK HAWK overview

100

Excellent

PurityRadar safety score

PWSID

SD4600043

State

South Dakota

City

BLACK HAWK

Population served

4,500

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 May 2017. Official EPA record →

Treatment technique · EPA contaminant 0400 health-based began Feb 2017 Resolved

Monitoring & reporting · EPA contaminant 3014 began Jul 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 2015 Resolved

Max contaminant level (MCL) · Total coliform health-based began Feb 2012 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 2005 Resolved

Monitoring & reporting · EPA contaminant 2380 began Jan 1999 Resolved

Monitoring & reporting · EPA contaminant 2976 began Jan 1999 Resolved

Monitoring & reporting · EPA contaminant 2981 began Jan 1999 Resolved

Monitoring & reporting · EPA contaminant 2987 began Jan 1999 Resolved

Recent enforcement actions

State action · SOX May 2017
State action · SIA Mar 2017
State action · SOX Sep 2015
State action · SIF Aug 2015
State action · SIF Aug 2015
State action · SIF Aug 2015
State action · SIF Aug 2015
State action · SIF Aug 2015

This profile is built from EPA public records for system SD4600043 — 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.