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Water system · PWSID SD4600264

CHAPEL LANE WATER COMPANY

100
Excellent
PurityRadar safety score

PWSID

SD4600264

State

South Dakota

City

RAPID CITY

Population served

1,200

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

2

Violations on record

0

Unaddressed

1

Health-based

6

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
Monitoring & reporting · Gross alpha began Apr 1988 Resolved

Recent enforcement actions

  • State action · SOX Mar 2015
  • State action · SIA Mar 2014
  • State action · SOX Jul 1992
  • State action · SIE Jun 1992
  • State action · SIE Oct 1989
  • State action · SIA Sep 1987

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Arsenic

1 station · latest Apr 2020

4.2 · max 5 ug/l · 5

Copper

1 station · latest Apr 2020

79.3 · max 96.3 ug/l · 5

Lead

1 station · latest Apr 2020

0.91 · max 1.77 ug/l · 5

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system SD4600264 — 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.