King County, WA

ZIP 98055

In ZIP 98055, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Renton City Of meets every EPA legal limit; 7 contaminants are above health goals, led by pfoa at 229× California’s Public Health Goal.
• Nearest Superfund site: Western Processing Co., Inc., 2.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Puget Sound Coatings (48%), mostly diisocyanates.
• Fine particles (PM2.5) average 6.8 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 98055

• Superfund sites nearbyF
• Factories and industrial sitesD
• Oil and gas wellsC
• Parks and nature nearbyB to C
• Air qualityB
• Drinking water qualityC
• Pesticide useA to C
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsA

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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