County Water Quality Report

Oklahoma County, Oklahoma

4 public water systems serving 1,434,343 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
D
64/100
Utilities rated 4
Population served 1,434,343
Most recent test 2024
🇪🇺 Would fail EU standards 1 of 4

Top water quality concerns in Oklahoma County

  • Chromium (hexavalent) significantly above health guidelinein 2 of 4 utilities
  • Haloacetic acids (HAA9) significantly above health guidelinein 2 of 4 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 2 of 4 utilities
  • PFAS contaminationin 1 of 4 utilities
  • Arsenic significantly above health guidelinein 1 of 4 utilities

All utilities in Oklahoma County

Click any utility for full grade card, contaminant data, and treatment plant contact info.

C
73/100

Oklahoma City Department of Public Works

Oklahoma City · 655,000 residents

Top concern: Haloacetic Acids (HAA5) significantly above health guideline

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C
65/100

MIDWEST CITY

MIDWEST CITY · 55,935 residents

Top concern: Haloacetic acids (HAA9) significantly above health guideline

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C
65/100

OKLAHOMA CITY

OKLAHOMA CITY · 644,000 residents

Top concern: Haloacetic acids (HAA9) significantly above health guideline

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F
51/100

EDMOND PWA

EDMOND · 79,408 residents

Top concern: PFAS contamination

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