CASTLEWOOD

CASTLEWOOD, SD · ~698 people served

Check your exact address → CASTLEWOOD overview

100

Excellent

PurityRadar safety score

PWSID

SD4600002

State

South Dakota

City

CASTLEWOOD

Population served

698

Primary source

GWP

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 Sep 2023. Official EPA record →

Treatment technique · EPA contaminant 0400 health-based began Jun 2021 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 2002 Resolved

Other · EPA contaminant 7000 began Jul 2002 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1998 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1997 Resolved

Monitoring & reporting · EPA contaminant 2992 began Jul 1996 Resolved

Monitoring & reporting · EPA contaminant 2987 began Jul 1996 Resolved

Monitoring & reporting · EPA contaminant 2964 began Jul 1996 Resolved

Monitoring & reporting · EPA contaminant 2380 began Jul 1996 Resolved

Monitoring & reporting · EPA contaminant 2976 began Jul 1996 Resolved

Monitoring & reporting · EPA contaminant 2981 began Jul 1996 Resolved

Monitoring & reporting · EPA contaminant 2378 began Jul 1996 Resolved

Recent enforcement actions

State action · SOX Sep 2023
State action · SIA Jun 2021
State action · SOX Apr 2003
State action · SIF Oct 2002
State action · SIE Sep 2002
State action · SOX Aug 2002
State action · SIA Aug 2002
State action · SOX Aug 1999

This profile is built from EPA public records for system SD4600002 — 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.