BUFFALO GAP

BUFFALO GAP, SD · ~126 people served

Check your exact address → BUFFALO GAP overview

100

Excellent

PurityRadar safety score

PWSID

SD4600077

State

South Dakota

City

BUFFALO GAP

Population served

126

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

156

Violations on record

Unaddressed

Health-based

266

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Jul 2025. Official EPA record →

Treatment technique · EPA contaminant 0400 health-based began Jul 2025 Unaddressed

Treatment technique · EPA contaminant 0400 health-based began May 2024 Resolved

Monitoring · Lead & Copper Rule began Dec 2023 Resolved

Monitoring · Lead & Copper Rule began Oct 2023 Resolved

Monitoring & reporting · Lead & Copper Rule began Oct 2023 Resolved

Monitoring · Lead & Copper Rule began Apr 2023 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2023 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2023 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jul 2018 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2018 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2018 Resolved

Treatment technique · EPA contaminant 0400 health-based began Jan 2018 Resolved

Recent enforcement actions

State action · SIA Jul 2025
State action · SOX Jan 2025
State action · SOX Dec 2024
State action · SOX Dec 2024
State action · SOX Aug 2024
State action · SIF May 2024
State action · SIF May 2024
State action · SIF May 2024

This profile is built from EPA public records for system SD4600077 — 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.