Clark County, WA

ZIP 98642

In ZIP 98642, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ridgefield Public Works meets every EPA legal limit; 9 contaminants are above health goals, led by lead at 2,629× California’s Public Health Goal.
• Nearest Superfund site: Boomsnub/airco, 4.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Gunderson LLC (80%), mostly nickel.
• Fine particles (PM2.5) average 6.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 32,110 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98642

• Superfund sites nearbyA to D
• Factories and industrial sitesB to C
• Oil and gas wellsA to B
• Parks and nature nearbyC to D
• Air qualityA
• Drinking water qualityF
• Pesticide useC to D
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

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