Jefferson County, WA

ZIP 98358

In ZIP 98358, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Quimper meets every EPA legal limit; 12 contaminants are above health goals, led by pfos at 2.4× California’s Public Health Goal.
• Nearest Superfund site: Port Hadlock Detachment (usnavy), 0.9 miles away.
• Largest share of modeled toxic air from industry: Port Townsend Paper Corp (96%), mostly acetaldehyde.
• Fine particles (PM2.5) average 5.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 2,723 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98358

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityF
• Pesticide useD
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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