County Water Quality Report

Spokane County, Washington

2 public water systems serving 572,167 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
F
52/100
Utilities rated 2
Population served 572,167
Most recent test 2024

Top water quality concerns in Spokane County

  • Arsenic significantly above health guidelinein 2 of 2 utilities
  • Lead detected in source waterin 1 of 2 utilities
  • Chromium-6 detectedin 1 of 2 utilities
  • PFAS contaminationin 1 of 2 utilities
  • Total PFOS and PFOA significantly above health guidelinein 1 of 2 utilities

All utilities in Spokane County

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

D
55/100

Spokane Water Utilities

Spokane · 229,000 residents

Top concern: Lead detected in source water

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F
48/100

SPOKANE CITY OF

Spokane · 343,167 residents

Top concern: PFAS contamination

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