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Water system · PWSID OK2003201

CALVIN

CALVIN, OK · ~300 people served

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

PWSID

OK2003201

State

Oklahoma

City

CALVIN

Population served

300

Primary source

Groundwater

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

71

Violations on record

0

Unaddressed

5

Health-based

148

Enforcement actions

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

Other · EPA contaminant 7000 began Jul 2025 Resolved
Other · EPA contaminant 7000 began Oct 2023 Resolved
Monitoring & reporting · Combined radium-226/228 began Apr 2021 Resolved
Monitoring & reporting · Uranium began Apr 2021 Resolved
Monitoring & reporting · Gross alpha began Apr 2021 Resolved
Monitoring & reporting · Beta/photon emitters began Apr 2021 Resolved
Monitoring & reporting · Thallium began Jan 2020 Resolved
Other · EPA contaminant 7000 began Jul 2017 Resolved
Other · EPA contaminant 7000 began Jul 2015 Resolved
Max contaminant level (MCL) · Total coliform health-based began May 2015 Resolved
Monitoring & reporting · Total coliform began May 2015 Resolved
Other · EPA contaminant 7000 began Jul 2014 Resolved

Recent enforcement actions

  • State action · SOX May 2025
  • State action · SOX Jul 2024
  • State action · SIA Jan 2024
  • State action · SIF Apr 2023
  • State action · SIF Apr 2023
  • State action · SIF Apr 2023
  • State action · SIF Apr 2023
  • State action · SIF Apr 2023

This profile is built from EPA public records for system OK2003201 — 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.