County Water Quality Report

Clark County, Washington

2 public water systems serving 526,573 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 2
Population served 526,573

Top water quality concerns in Clark County

  • PFAS contaminationin 2 of 2 utilities
  • Total PFOS and PFOA significantly above health guidelinein 2 of 2 utilities
  • Perfluorohexane sulfonate (PFHXS) significantly above health guidelinein 2 of 2 utilities
  • Arsenic significantly above health guidelinein 1 of 2 utilities
  • Perfluorooctanoic acid (PFOA) significantly above health guidelinein 1 of 2 utilities

All utilities in Clark County

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

F
51/100

CLARK PUBLIC UTILITIES

VANCOUVER · 153,526 residents

Top concern: PFAS contamination

View report →
F
51/100

VANCOUVER CITY OF

Vancouver · 373,047 residents

Top concern: PFAS contamination

View report →