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Water system · PWSID OK3006809

SEQUOYAH CO. RWD #4

SALLISAW, OK · ~1,750 people served

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

PWSID

OK3006809

State

Oklahoma

City

SALLISAW

Population served

1,750

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

18

Violations on record

0

Unaddressed

4

Health-based

40

Enforcement actions

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

Monitoring · Lead & Copper Rule began Jan 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began Jan 2025 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Jun 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2018 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2017 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jul 2017 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2013 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2013 Resolved
Monitoring & reporting · Total coliform began May 2009 Resolved
Monitoring & reporting · Total coliform began Jun 2005 Resolved
Monitoring & reporting · Total coliform began Sep 2003 Resolved

Recent enforcement actions

  • State action · SIF Jun 2025
  • State action · SOX May 2025
  • State action · SOX May 2025
  • State action · SIE Apr 2025
  • State action · SIA Apr 2025
  • State action · SIA Apr 2025
  • State action · SIE Apr 2025
  • State action · SOX Apr 2019

This profile is built from EPA public records for system OK3006809 — 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.