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Water system · PWSID OK1020911

LANGSTON PWA

LANGSTON, OK · ~1,670 people served

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

PWSID

OK1020911

State

Oklahoma

City

LANGSTON

Population served

1,670

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

101

Violations on record

2

Unaddressed

68

Health-based

296

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Unaddressed
Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Monitoring · Lead & Copper Rule began Mar 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began Mar 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began Sep 2024 Resolved
Monitoring & reporting · EPA contaminant 0300 began Apr 2024 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Apr 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Jan 2021 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2020 Resolved
Max contaminant level (MCL) · Total trihalomethanes (TTHM) health-based began Oct 2020 Resolved

Recent enforcement actions

  • State action · SIA Nov 2025
  • State action · SIE Nov 2025
  • State action · SOX Jun 2025
  • State action · SOX Jun 2025
  • State action · SIE Jun 2025
  • State action · SIA Jun 2025
  • State action · SIA Mar 2025
  • State action · SIE Mar 2025

This profile is built from EPA public records for system OK1020911 — 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.