SPEARFISH

SPEARFISH, SD · ~12,193 people served

Check your exact address → SPEARFISH overview

100

Excellent

PurityRadar safety score

PWSID

SD4600311

State

South Dakota

City

SPEARFISH

Population served

12,193

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 Jul 2013. Official EPA record →

Monitoring & reporting · EPA contaminant 3014 began Jan 2013 Resolved

Monitoring & reporting · Gross alpha began Jan 2001 Resolved

Monitoring & reporting · Uranium began Jan 2001 Resolved

Monitoring & reporting · Total coliform began Nov 2000 Resolved

Monitoring & reporting · Nitrate began Jan 1995 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1992 Resolved

Recent enforcement actions

State action · SIF Jul 2013
State action · SOX Apr 2013
State action · SIE Feb 2013
State action · SOX Feb 2003
State action · SOX Feb 2003
State action · SIF Feb 2002
State action · SIF Feb 2002
State action · SIE Feb 2002

This profile is built from EPA public records for system SD4600311 — 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.