WINNER

WINNER, SD · ~2,921 people served

Check your exact address → WINNER overview

100

Excellent

PurityRadar safety score

PWSID

SD4600373

State

South Dakota

City

WINNER

Population served

2,921

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 Feb 2000. Official EPA record →

Max contaminant level (MCL) · Total coliform health-based began Jul 1999 Resolved

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

Monitoring & reporting · Nitrate began Jan 1994 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1994 Resolved

Max contaminant level (MCL) · Total coliform health-based began Aug 1993 Resolved

Monitoring & reporting · Lead & Copper Rule began Jul 1992 Resolved

Monitoring & reporting · Gross alpha began Jan 1989 Resolved

Monitoring & reporting · Uranium began Jan 1989 Resolved

Recent enforcement actions

State action · SOX Feb 2000
State action · SIF Sep 1999
State action · SIE Jul 1999
State action · SOX May 1996
State action · SIF Nov 1995
State action · SIE Oct 1995
State action · SOX Sep 1995
State action · SOX Jan 1995

This profile is built from EPA public records for system SD4600373 — 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.