County Water Quality Report

Pierce County, Washington

5 public water systems serving 851,611 residents

Data sources: EPA SDWIS EPA ECHO EWG Tap Water Database Utility CCRs ⓘ How did we get these ratings?
County average grade
F
56/100
Utilities rated 5
Population served 851,611
Most recent test 2024

Top water quality concerns in Pierce County

  • PFAS contaminationin 3 of 5 utilities
  • Perfluorohexane sulfonate (PFHXS) significantly above health guidelinein 3 of 5 utilities
  • Total PFOS and PFOA significantly above health guidelinein 3 of 5 utilities
  • Arsenic significantly above health guidelinein 3 of 5 utilities
  • Haloacetic acids (HAA9) significantly above health guidelinein 2 of 5 utilities

All utilities in Pierce County

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

C
67/100

TACOMA WATER DIVISION CITY OF

TACOMA · 446,170 residents

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

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C
65/100

City of Tacoma Water Department

Tacoma · 217,000 residents

Top concern: Lead detected in source water

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F
51/100

JBLM Lewis

Joint Base Lewis-McChord · 62,197 residents

Top concern: PFAS contamination

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F
48/100

LAKEWOOD WATER DISTRICT

LAKEWOOD · 62,089 residents

Top concern: PFAS contamination

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F
47/100

SOUTHWOOD

Tacoma · 64,155 residents

Top concern: PFAS contamination

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