County Water Quality Report

Kern County, California

3 public water systems serving 808,025 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
F
51/100
Utilities rated 3
Population served 808,025
Most recent test 2024

Top water quality concerns in Kern County

  • Arsenic significantly above health guidelinein 3 of 3 utilities
  • PFAS contaminationin 2 of 3 utilities
  • Perfluorohexane sulfonate (PFHXS) significantly above health guidelinein 2 of 3 utilities
  • Haloacetic acids (HAA9) significantly above health guidelinein 1 of 3 utilities
  • Haloacetic acids (HAA5) significantly above health guidelinein 1 of 3 utilities

All utilities in Kern County

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

D
57/100

Bakersfield Department of Public Works

Bakersfield · 380,000 residents

Top concern: Arsenic significantly above health guideline

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F
48/100

BAKERSFIELD, CITY OF

BAKERSFIELD · 160,144 residents

Top concern: PFAS contamination

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F
47/100

CWS - BAKERSFIELD

SAN JOSE · 267,881 residents

Top concern: PFAS contamination

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