King County, WA
ZIP 98224
In ZIP 98224, none of the 12 things we check has a part graded D or F.
- Drinking water: Snoqualmie Water meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 983× California’s Public Health Goal.
- Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
- Largest share of modeled toxic air from industry: Western Pneumatic Tube Co LLC (30%), mostly diisocyanates.
- Fine particles (PM2.5) average 5.6 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 98224
- Superfund sites nearbyA
- Factories and industrial sitesA
- Oil and gas wellsA
- Parks and nature nearbyB
- Air qualityA
- Drinking water qualityA to C
- Pesticide useB
- Neighborhood health statusB
- Noise levelsA
- Radiation signalsA
Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources
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