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Water system · PWSID OK3007218

OWASSO

OWASSO, OK · ~23,000 people served

Check your exact address → OWASSO overview
100
Excellent
PurityRadar safety score

PWSID

OK3007218

State

Oklahoma

City

OWASSO

Population served

23,000

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

29

Violations on record

0

Unaddressed

8

Health-based

67

Enforcement actions

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

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Resolved
Reporting · EPA contaminant 5200 began Oct 2024 Resolved
Monitoring & reporting · Lead & Copper Rule began Oct 2016 Resolved
Max contaminant level (MCL) · Total coliform health-based began Feb 2013 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2011 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Dec 2007 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Dec 2007 Resolved
Max contaminant level (MCL) · Total coliform health-based began Dec 2005 Resolved
Max contaminant level (MCL) · Total coliform health-based began Oct 2005 Resolved
Monitoring & reporting · Total coliform began Oct 2005 Resolved
Max contaminant level (MCL) · Total coliform health-based began Nov 2004 Resolved
Monitoring & reporting · Total coliform began Sep 2004 Resolved

Recent enforcement actions

  • State action · SOX Jul 2025
  • State action · SOX Jul 2025
  • State action · SIA Jul 2025
  • State action · SIA Jul 2025
  • State action · SIF Oct 2019
  • State action · SOX Mar 2018
  • State action · SIE Apr 2017
  • State action · SIA Apr 2017

This profile is built from EPA public records for system OK3007218 — 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.