GUYMON

GUYMON, OK · ~11,442 people served

Check your exact address → GUYMON overview

100

Excellent

PurityRadar safety score

PWSID

OK2007003

State

Oklahoma

City

GUYMON

Population served

11,442

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

Latest detections from EPA’s UCMR5 monitoring (through Sep 2023). Levels in parts per trillion (ppt).

Lithium

116,000 ppt

limit —

No federal limit

Violations & enforcement

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Max contaminant level (MCL) · Thallium health-based began Jan 2025 Resolved

Monitoring & reporting · Thallium began Jan 2023 Resolved

Monitoring · Lead & Copper Rule began May 2019 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2019 Resolved

Max contaminant level (MCL) · Total coliform health-based began Sep 2005 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jun 2005 Resolved

Monitoring & reporting · Total coliform began Nov 1998 Resolved

Max contaminant level (MCL) · Total coliform health-based began Jun 1994 Resolved

Recent enforcement actions

State action · SOX Sep 2025
State action · SIE Mar 2025
State action · SFL Mar 2025
State action · SIF Mar 2025
State action · SIF Jun 2024
State action · SOX May 2024
State action · SOX May 2024
State action · SOX May 2024

This profile is built from EPA public records for system OK2007003 — 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.