Snohomish County, WA

ZIP 98201

In ZIP 98201, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Snohomish City Of meets every EPA legal limit; 5 contaminants are above health goals, led by chloroform at 103× California’s Public Health Goal.
• Nearest Superfund site: Tulalip Landfill, 3.8 miles away.
• Largest share of modeled toxic air from industry: Granite Construction Co (35%), mostly polycyclic aromatic compounds.
• Fine particles (PM2.5) average 6.0 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 98201

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

Based on 10 census tracts · compiled October 25, 2026 · how each grade works and its sources

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