Clallam County, WA

ZIP 98363

In ZIP 98363, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: San Juan Vista meets every EPA legal limit; 7 contaminants are above health goals, led by arsenic at 688× California’s Public Health Goal.
• Closer to Superfund sites than 54% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Mckinley Paper Co. - Washington Mill (55%), mostly lead.
• Fine particles (PM2.5) average 3.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 9,202 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98363

• Superfund sites nearbyA to C
• Factories and industrial sitesA to B
• Oil and gas wellsA to C
• Parks and nature nearbyA to C
• Air qualityA
• Drinking water qualityA to C
• Pesticide useB to D
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to C

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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