WESTFIELD ADDITION

SPEARFISH, SD · ~104 people served

Check your exact address → SPEARFISH overview

100

Excellent

PurityRadar safety score

PWSID

SD4600521

State

South Dakota

City

SPEARFISH

Population served

104

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 Dec 2004. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began May 2004 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jul 2001 Resolved

Other · EPA contaminant 7000 began Jul 2000 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jan 1998 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 1997 Resolved

Monitoring & reporting · EPA contaminant 2378 began Jan 1996 Resolved

Monitoring & reporting · EPA contaminant 2992 began Jan 1996 Resolved

Monitoring & reporting · EPA contaminant 2985 began Jan 1996 Resolved

Monitoring & reporting · EPA contaminant 2380 began Jan 1996 Resolved

Monitoring & reporting · EPA contaminant 2981 began Jan 1996 Resolved

Monitoring & reporting · EPA contaminant 2976 began Jan 1996 Resolved

Monitoring & reporting · EPA contaminant 2987 began Jan 1996 Resolved

Recent enforcement actions

State action · SOX Dec 2004
State action · SIF May 2004
State action · SIE May 2004
State action · SOX Feb 2002
State action · SIF Jul 2001
State action · SIE Jul 2001
State action · SOX Jul 2000
State action · SIA Jul 2000

This profile is built from EPA public records for system SD4600521 — 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.