Kitsap County, WA

ZIP 98370

In ZIP 98370, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Vinland meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 417× California’s Public Health Goal.
• Nearest Superfund site: Naval Undersea Warfare Engineering Station (4 Waste Areas), 3.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Alaskan Copper Works (32%), mostly chromium compounds.
• Fine particles (PM2.5) average 6.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,384 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98370

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

Based on 11 census tracts · compiled October 25, 2026 · how each grade works and its sources

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