King County, WA

ZIP 98023

In ZIP 98023, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Tacoma Water Division City Of meets every EPA legal limit; 9 contaminants are above health goals, led by pfoa at 229× California’s Public Health Goal.
• Nearest Superfund site: Commencement Bay, Near Shore/tide Flats, 6.6 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Puget Sound Coatings (35%), mostly diisocyanates.
• Fine particles (PM2.5) average 6.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 17,223 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98023

• Superfund sites nearbyD to F
• Factories and industrial sitesC to D
• Oil and gas wellsA to B
• Parks and nature nearbyB to C
• Air qualityA
• Drinking water qualityC
• Pesticide useA to B
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsA

Based on 11 census tracts · compiled October 25, 2026 · how each grade works and its sources

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