Snohomish County, WA

ZIP 98271

In ZIP 98271, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Port Susan Camp Club #3 meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 1,013× California’s Public Health Goal.
• Nearest Superfund site: Tulalip Landfill, 3.0 miles away.
• Largest share of modeled toxic air from industry: Granite Construction Co (44%), mostly polycyclic aromatic compounds.
• Fine particles (PM2.5) average 5.5 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 98271

• Superfund sites nearbyD to F
• Factories and industrial sitesA to B
• Oil and gas wellsA to C
• Parks and nature nearbyB to D
• Air qualityA
• Drinking water qualityA to D
• Pesticide useB to C
• Neighborhood health statusB to F
• 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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