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Water system · PWSID OK1021602

OKLA ORDNANCE WORKS AUTHORITY

PRYOR, OK · ~4,000 people served

Check your exact address → PRYOR overview
81
Good
PurityRadar safety score

PWSID

OK1021602

State

Oklahoma

City

PRYOR

Population served

4,000

Primary source

Surface water

Score history

▼ 19 points — the score moved from 100 to 81 on Jun 18, 2026, as newly published EPA data was incorporated.

Jun 18, 2026 · score 100 Jun 18, 2026 · score 81

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 Mar 2024). Levels in parts per trillion (ppt).

PFOS

Perfluorooctanesulfonic acid

5.7 ppt

limit 4 ppt

Above EPA limit · 1.4×

Violations & enforcement

14

Violations on record

0

Unaddressed

5

Health-based

81

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
Treatment technique · EPA contaminant 0300 health-based began Dec 2013 Resolved
Monitoring & reporting · Total coliform began May 2009 Resolved
Monitoring & reporting · EPA contaminant 1009 began Sep 2005 Resolved
Monitoring & reporting · Total coliform began Feb 1998 Resolved
Monitoring & reporting · Total coliform began Jun 1997 Resolved
Monitoring & reporting · Total coliform began Dec 1996 Resolved
Monitoring & reporting · Lead & Copper Rule began Jan 1994 Resolved
Monitoring & reporting · Total coliform began Aug 1991 Resolved
Monitoring & reporting · Total coliform began Jun 1991 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Aug 1987 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 · SOX Jul 2016
  • State action · SOX Jul 2016
  • State action · SOX Jul 2016
  • State action · SOX Jul 2016

This profile is built from EPA public records for system OK1021602 — 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.