Yakima County, WA

ZIP 98939

In ZIP 98939, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Wapato Waterworks meets every EPA legal limit; 7 contaminants are above health goals, led by lead at 19× California’s Public Health Goal.
• Closer to Superfund sites than 55% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Triumph Actuation Systems-Yakima (73%), mostly chromium.
• Fine particles (PM2.5) average 7.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 2,424,406 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 98939

• Superfund sites nearbyC
• Factories and industrial sitesB
• Oil and gas wellsC
• Parks and nature nearbyD
• Air qualityC
• Drinking water qualityC to D
• Pesticide useF
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsC

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

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