CHEYENNE

CHEYENNE, OK · ~778 people served

Check your exact address → CHEYENNE overview

100

Excellent

PurityRadar safety score

PWSID

OK1010803

State

Oklahoma

City

CHEYENNE

Population served

778

Primary source

Surface water

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

260

Enforcement actions

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

Monitoring & reporting · Total trihalomethanes (TTHM) began Dec 2024 Resolved

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved

Reporting · EPA contaminant 5200 began Oct 2024 Resolved

Monitoring · Lead & Copper Rule began Feb 2024 Resolved

Monitoring & reporting · Bromate began Jan 2024 Resolved

Monitoring & reporting · EPA contaminant 0999 began Jan 2024 Resolved

Monitoring & reporting · Bromate began Jan 2024 Resolved

Monitoring & reporting · Bromate began Jul 2023 Resolved

Monitoring & reporting · Total trihalomethanes (TTHM) began May 2023 Resolved

Monitoring & reporting · Haloacetic acids (HAA5) began May 2023 Resolved

Monitoring · Lead & Copper Rule began May 2023 Resolved

Recent enforcement actions

State action · SOX Oct 2025
State action · SOX Oct 2025
State action · SIA Jul 2025
State action · SIA Jul 2025
State action · SO0 Jun 2025
State action · SO0 Jun 2025
State action · SO0 Jun 2025
State action · SO0 Jun 2025

This profile is built from EPA public records for system OK1010803 — 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.