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Water system · PWSID SD4600269

HIDDEN VALLEY WATER ASSOCIATION INC

RAPID CITY, SD · ~27 people served

Check your exact address → RAPID CITY overview
100
Excellent
PurityRadar safety score

PWSID

SD4600269

State

South Dakota

City

RAPID CITY

Population served

27

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

22

Violations on record

0

Unaddressed

7

Health-based

45

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Dec 2024. Official EPA record →

Monitoring · Lead & Copper Rule began Oct 2024 Resolved
Monitoring · Lead & Copper Rule began Sep 2021 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2021 Resolved
Treatment technique · EPA contaminant 0400 health-based began Oct 2017 Resolved
Treatment technique · EPA contaminant 0400 health-based began Feb 2016 Resolved
Monitoring & reporting · EPA contaminant 3014 began Dec 2015 Resolved
Monitoring & reporting · Total coliform began Dec 2015 Resolved
Monitoring & reporting · EPA contaminant 0999 began Oct 2015 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jul 2012 Resolved
Max contaminant level (MCL) · Total coliform health-based began Jan 1999 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 1998 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1994 Resolved

Recent enforcement actions

  • State action · SOX Dec 2024
  • State action · SIF Nov 2024
  • State action · SIE Nov 2024
  • State action · SOX Jun 2022
  • State action · SOX Nov 2021
  • State action · SIF Oct 2021
  • State action · SIF Oct 2021
  • State action · SIE Oct 2021

This profile is built from EPA public records for system SD4600269 — 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.