Yakima County, WA

ZIP 98933

In ZIP 98933, 3 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 arsenic at 376× California’s Public Health Goal.
• Closer to Superfund sites than 56% 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 98933

• Superfund sites nearbyC
• Factories and industrial sitesB to C
• Oil and gas wellsB to C
• Parks and nature nearbyC
• Air qualityA to C
• Drinking water qualityB to C
• Pesticide useF
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsB to C

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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