County Water Quality Report

Yolo County, California

3 public water systems serving 182,274 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 3
Population served 182,274

Top water quality concerns in Yolo County

  • Haloacetic acids (HAA9) significantly above health guidelinein 3 of 3 utilities
  • Arsenic significantly above health guidelinein 2 of 3 utilities
  • Chromium (hexavalent) significantly above health guidelinein 2 of 3 utilities
  • Haloacetic acids (HAA5) significantly above health guidelinein 1 of 3 utilities
  • Total trihalomethanes (TTHMs) significantly above health guidelinein 1 of 3 utilities

All utilities in Yolo County

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

C
67/100

CITY OF WOODLAND

WOODLAND · 61,462 residents

Top concern: Chromium (hexavalent) significantly above health guideline

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C
65/100

CITY OF WEST SACRAMENTO

WEST SACRAMENTO · 53,355 residents

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

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D
59/100

CITY OF DAVIS

DAVIS · 67,457 residents

Top concern: Arsenic significantly above health guideline

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