Free tap water grades for 1,100+ water systems & 10,000+ ZIP codesFree tap water grades for 10,000+ ZIP codes Official EPA compliance records · Independent ratings

County Water Quality Report

Butte County, California

1 public water system serving 114,925 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
D
69/100
Utilities rated 1
Population served 114,925

Top water quality concerns in Butte County

  • PFAS contaminationin 1 of 1 utilities
  • Perfluorohexane sulfonate (PFHXS) significantly above health guidelinein 1 of 1 utilities
  • Haloacetic acids (HAA5) significantly above health guidelinein 1 of 1 utilities
  • Chromium (hexavalent) significantly above health guidelinein 1 of 1 utilities
  • Arsenic detectedin 1 of 1 utilities

All utilities in Butte County

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

C
69/100

CAL-WATER SERVICE CO.-CHICO

SAN JOSE · 114,925 residents

Top concern: PFAS contamination

View report →