MISSION HILL

GAYVILLE, SD · ~190 people served

Check your exact address → GAYVILLE overview

100

Excellent

PurityRadar safety score

PWSID

SD4600212

State

South Dakota

City

GAYVILLE

Population served

190

Primary source

SWP

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 May 2019. Official EPA record →

Treatment technique · EPA contaminant 0400 health-based began Feb 2019 Resolved

Treatment technique · EPA contaminant 0400 health-based began Feb 2015 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2009 Resolved

Monitoring & reporting · Total coliform began Oct 2009 Resolved

Treatment technique · EPA contaminant 0400 health-based began Jan 2009 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2005 Resolved

Monitoring & reporting · Total coliform began Nov 2001 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jun 1998 Resolved

Monitoring & reporting · Lead & Copper Rule began Jan 1996 Resolved

Recent enforcement actions

State action · SOX May 2019
State action · SIA Mar 2019
State action · SOX Jul 2015
State action · SIA Mar 2014
State action · SOX Jan 2011
State action · SOX May 2010
State action · SIF Dec 2009
State action · SIE Nov 2009

This profile is built from EPA public records for system SD4600212 — 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.