Snohomish County, WA

ZIP 98203

In ZIP 98203, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Everett Public Works Dept. City Of meets every EPA legal limit; 6 contaminants are above health goals, led by lead at 9× California’s Public Health Goal.
• Nearest Superfund site: Tulalip Landfill, 8.7 miles away.
• Largest share of modeled toxic air from industry: Puget Sound Coatings (26%), mostly diisocyanates.
• Fine particles (PM2.5) average 6.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 36,222 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98203

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

Based on 11 census tracts · compiled September 10, 2026 · how each grade works and its sources

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