Kitsap County, WA

ZIP 98366

In ZIP 98366, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Inwood Beach Club has 2 contaminants at or over an EPA legal limit; 6 contaminants are above health goals, led by pfos at 16× California’s Public Health Goal.
• Nearest Superfund site: Old Navy Dump/manchester Laboratory (usepa/noaa), 3.7 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: US Navy Psns & Imf - Bremerton Site & Naval Base Kitsap (74%), mostly chromium.
• Fine particles (PM2.5) average 6.3 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 98366

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

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

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