County Water Quality Report

Fresno County, California

3 public water systems serving 1,217,846 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
F
48/100
Utilities rated 3
Population served 1,217,846
Most recent test 2024

Top water quality concerns in Fresno County

  • PFAS contaminationin 3 of 3 utilities
  • Haloacetic acids (HAA5) significantly above health guidelinein 2 of 3 utilities
  • Arsenic significantly above health guidelinein 2 of 3 utilities
  • Arsenic detectedin 1 of 3 utilities
  • Chromium-6 detectedin 1 of 3 utilities

All utilities in Fresno County

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

F
50/100

CITY OF CLOVIS

CLOVIS · 130,130 residents

Top concern: PFAS contamination

View report →
F
48/100

City of Fresno Water Department

Fresno · 542,000 residents

Top concern: PFAS contamination

View report →
F
47/100

CITY OF FRESNO

FRESNO · 545,716 residents

Top concern: PFAS contamination

View report →