DELAWARE CO RWSG&SWM DISTRICT 11

TWIN OAKS, OK · ~750 people served

Check your exact address → TWIN OAKS overview

100

Excellent

PurityRadar safety score

PWSID

OK3002157

State

Oklahoma

City

TWIN OAKS

Population served

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

Violations on record

Unaddressed

Health-based

Enforcement actions

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

Monitoring & reporting · Lead & Copper Rule began Oct 2025 Unaddressed

Reporting · EPA contaminant 5200 began Oct 2024 Unaddressed

Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Unaddressed

Other · EPA contaminant 7000 began Jul 2024 Resolved

Other · EPA contaminant 7000 began Oct 2022 Resolved

Other · EPA contaminant 7500 began Aug 2022 Resolved

Monitoring · Lead & Copper Rule began May 2022 Resolved

Monitoring & reporting · EPA contaminant 0999 began Apr 2022 Resolved

Monitoring · Lead & Copper Rule began Dec 2021 Resolved

Monitoring & reporting · EPA contaminant 0999 began Oct 2021 Resolved

Other · EPA contaminant 7000 began Jul 2021 Resolved

Other · EPA contaminant 7000 began Oct 2020 Resolved

Recent enforcement actions

State action · SIE Nov 2025
State action · SIA Nov 2025
State action · SIA Jul 2025
State action · SIA Jul 2025
State action · SIA Jul 2024
State action · SOX Jul 2024
State action · SIF Sep 2023
State action · SOX May 2023

This profile is built from EPA public records for system OK3002157 — 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.