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Water system · PWSID OK2003616

OSAGE CO RWD #21

SHIDLER, OK · ~1,500 people served

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

PWSID

OK2003616

State

Oklahoma

City

SHIDLER

Population served

1,500

Primary source

GU

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

83

Violations on record

1

Unaddressed

5

Health-based

248

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Mar 2026. Official EPA record →

Other · EPA contaminant 7000 began Jul 2025 Unaddressed
Monitoring & reporting · EPA contaminant 0999 began Apr 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began Feb 2025 Resolved
Monitoring · Lead & Copper Rule began Feb 2025 Resolved
Monitoring & reporting · EPA contaminant 0999 began Nov 2024 Resolved
Treatment technique · EPA contaminant 5200 health-based began Oct 2024 Addressed
Reporting · EPA contaminant 5200 began Oct 2024 Addressed
Monitoring · Lead & Copper Rule began Sep 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Sep 2024 Resolved
Monitoring & reporting · EPA contaminant 0999 began Aug 2024 Resolved
Monitoring · Lead & Copper Rule began Aug 2024 Resolved
Monitoring · Lead & Copper Rule began May 2024 Resolved

Recent enforcement actions

  • EPA/federal action · EFL Mar 2026
  • State action · SOX Jul 2025
  • State action · SIA Jul 2025
  • State action · SIA Jul 2025
  • State action · SIE Jun 2025
  • State action · SIA Jun 2025
  • State action · SOX May 2025
  • State action · SOX May 2025

Area water-quality monitoring

Environmental monitoring (rivers, wells, intakes) recorded in this system’s service area in the EPA/USGS Water Quality Portal since 2018 — source/ambient water, not finished tap water. Context for the watershed, not a reading from your tap.

ContaminantMedian · max · samples

Nitrate

4 stations · latest May 2024

0.403 · max 2.41 mg/L · 48

Copper

3 stations · latest Mar 2021

0.0295 · max 1.37 mg/L · 44

Lead

3 stations · latest Mar 2021

0.099 · max 0.117 mg/L · 40

Arsenic

3 stations · latest Jul 2020

0.00265 · max 0.0045 mg/L · 6

Manganese

3 stations · latest Jul 2020

0.096 · max 0.166 mg/L · 6

Atrazine

2 stations · latest Aug 2020

0.999 · max 1.98 ug/L · 4

Source: Water Quality Portal (EPA/USGS/state agencies). Values are as-reported and aren’t health thresholds.

This profile is built from EPA public records for system OK2003616 — 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.