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Water system · PWSID SD4600390

COLTON

COLTON, SD · ~738 people served

Check your exact address → COLTON overview
100
Excellent
PurityRadar safety score

PWSID

SD4600390

State

South Dakota

City

COLTON

Population served

738

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

41

Violations on record

0

Unaddressed

4

Health-based

33

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2011. Official EPA record →

Treatment technique · EPA contaminant 0400 health-based began Nov 2010 Resolved
Other · EPA contaminant 7000 began Jul 2007 Resolved
Monitoring & reporting · Total coliform began Jun 2003 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2000 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2000 Resolved
Max contaminant level (MCL) · Total coliform health-based began Sep 1998 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 1997 Resolved
Monitoring & reporting · EPA contaminant 2306 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2015 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2050 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2067 began Jan 1996 Resolved
Monitoring & reporting · EPA contaminant 2065 began Jan 1996 Resolved

Recent enforcement actions

  • State action · SOX Feb 2011
  • State action · SIA Nov 2010
  • State action · SOX Aug 2007
  • State action · SIA Jul 2007
  • State action · SOX Jan 2004
  • State action · SIF Oct 2003
  • State action · SIE Jul 2003
  • State action · SOX Sep 2001

This profile is built from EPA public records for system SD4600390 — 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.