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Water system · PWSID OK1020902

OKLAHOMA CITY

OKLAHOMA CITY, OK · ~644,000 people served

Check your exact address → OKLAHOMA CITY overview
100
Excellent
PurityRadar safety score

PWSID

OK1020902

State

Oklahoma

City

OKLAHOMA CITY

Population served

644,000

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

Latest detections from EPA’s UCMR5 monitoring (through Oct 2024). Levels in parts per trillion (ppt).

Lithium

67,800 ppt

limit —

No federal limit

PFPeA

3.3 ppt

limit —

No federal limit

Violations & enforcement

8

Violations on record

0

Unaddressed

5

Health-based

25

Enforcement actions

From EPA ECHO (SDWIS), most recent enforcement Feb 2015. Official EPA record →

Monitoring & reporting · Total coliform began Jul 2012 Resolved
Treatment technique · EPA contaminant 0300 health-based began Jan 2012 Resolved
Monitoring & reporting · Total trihalomethanes (TTHM) began Oct 2007 Resolved
Monitoring & reporting · Haloacetic acids (HAA5) began Oct 2007 Resolved
Treatment technique · Bromate health-based began Jul 2004 Resolved
Treatment technique · Bromate health-based began Apr 2004 Resolved
Treatment technique · Bromate health-based began Jan 2004 Resolved
Treatment technique · EPA contaminant 0200 health-based began Mar 2002 Resolved

Recent enforcement actions

  • State action · SOX Feb 2015
  • State action · SOX Feb 2015
  • State action · SOX Aug 2013
  • State action · SIE Apr 2013
  • State action · SIE Sep 2012
  • State action · SIA Sep 2012
  • State action · SOX Jul 2012
  • State action · SIF Jul 2012

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

1 station · latest Sep 2023

0.175 · max 0.669 mg/l as N · 84

Arsenic

1 station · latest Nov 2023

4.75 · max 9.2 ug/l · 16

Atrazine

1 station · latest Nov 2023

29.2 · max 49.7 ng/l · 16

Fluoride

1 station · latest Nov 2023

0.56 · max 0.78 mg/l · 16

Manganese

1 station · latest Nov 2023

30.4 · max 146 ug/l · 16

Lead

1 station · latest Nov 2023

0.124 · max 0.749 ug/l · 15

Copper

1 station · latest Nov 2023

2.05 · max 2.2 ug/l · 2

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 OK1020902 — 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.