King County, WA

ZIP 98022

In ZIP 98022, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sawyerwood Water System has 2 contaminants at or over an EPA legal limit; 4 contaminants are above health goals, led by pfos at 13× California’s Public Health Goal.
• Closer to Superfund sites than 58% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Puget Sound Coatings (46%), mostly diisocyanates.
• Fine particles (PM2.5) average 5.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 18,075 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98022

• Superfund sites nearbyA to C
• Factories and industrial sitesA to C
• Oil and gas wellsA to D
• Parks and nature nearbyB to D
• Air qualityA
• Drinking water qualityC to F
• Pesticide useB to C
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB to C

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

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