LANTERN ESTATES

SPEARFISH, SD · ~192 people served

Check your exact address → SPEARFISH overview

100

Excellent

PurityRadar safety score

PWSID

SD4600315

State

South Dakota

City

SPEARFISH

Population served

192

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

110

Enforcement actions

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

Other · EPA contaminant 7500 began Mar 2009 Resolved

Monitoring & reporting · Total coliform began Aug 2008 Resolved

Monitoring & reporting · Nitrate began Jan 2008 Resolved

Other · EPA contaminant 7000 began Jul 2007 Resolved

Monitoring & reporting · Total coliform began Oct 2006 Resolved

Monitoring & reporting · Total coliform began Sep 2006 Resolved

Monitoring & reporting · Total coliform began Jul 2006 Resolved

Monitoring & reporting · Total coliform began May 2006 Resolved

Monitoring & reporting · Chromium (total) began Jan 2006 Resolved

Monitoring & reporting · Fluoride began Jan 2006 Resolved

Monitoring & reporting · Antimony began Jan 2006 Resolved

Monitoring & reporting · Barium began Jan 2006 Resolved

Recent enforcement actions

State action · SOX Jun 2010
State action · SIF Jun 2010
State action · SIF Jun 2009
State action · SFG Apr 2009
State action · SOX Mar 2009
State action · SOX Jan 2009
State action · SIE Jan 2009
State action · SIE Sep 2008

This profile is built from EPA public records for system SD4600315 — 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.