BOULDER PARK WATER USERS ASSOCIATION

RAPID CITY, SD · ~200 people served

Check your exact address → RAPID CITY overview

100

Excellent

PurityRadar safety score

PWSID

SD4602005

State

South Dakota

City

RAPID CITY

Population served

200

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 Mar 2015. Official EPA record →

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

Other · EPA contaminant 7000 began Jul 2008 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1996 Resolved

Max contaminant level (MCL) · Total coliform health-based began Apr 1995 Resolved

Max contaminant level (MCL) · Total coliform health-based began Nov 1994 Resolved

Monitoring & reporting · EPA contaminant 2046 began Jan 1993 Resolved

Monitoring & reporting · EPA contaminant 2050 began Jan 1993 Resolved

Monitoring & reporting · EPA contaminant 2043 began Jan 1993 Resolved

Monitoring & reporting · EPA contaminant 2067 began Jan 1993 Resolved

Monitoring & reporting · EPA contaminant 2065 began Jan 1993 Resolved

Monitoring & reporting · EPA contaminant 2044 began Jan 1993 Resolved

Recent enforcement actions

State action · SOX Mar 2015
State action · SIA Mar 2014
State action · SOX Aug 2008
State action · SIA Jul 2008
State action · SOX Jul 1997
State action · SIF Feb 1997
State action · SIE Feb 1997
State action · SOX Apr 1996

This profile is built from EPA public records for system SD4602005 — 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.