Clark County, WA

ZIP 98675

In ZIP 98675, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Yacolt has 1 contaminant at or over an EPA legal limit; 7 contaminants are above health goals, led by pfos at 8.6× California’s Public Health Goal.
• Nearest Superfund site: Toftdahl Drums, 4.3 miles away.
• Largest share of modeled toxic air from industry: Gunderson LLC (82%), mostly nickel.
• Fine particles (PM2.5) average 5.9 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 98675

• Superfund sites nearbyA
• Factories and industrial sitesA to B
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityA
• Drinking water qualityB to F
• Pesticide useC to D
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsB to C

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…