King County, WA

ZIP 98047

In ZIP 98047, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mountain View-Edgewood Water Co meets every EPA legal limit; 7 contaminants are above health goals, led by pfos at 3.1× California’s Public Health Goal.
• Nearest Superfund site: Midway Landfill, 8.1 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Puget Sound Coatings (48%), mostly diisocyanates.
• Fine particles (PM2.5) average 6.6 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 98047

• Superfund sites nearbyC to D
• Factories and industrial sitesD
• Oil and gas wellsB
• Parks and nature nearbyD
• Air qualityA
• Drinking water qualityD to F
• Pesticide useB to C
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…