Yakima County, WA

ZIP 98923

In ZIP 98923, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Yakima Water Division City Of meets every EPA legal limit; 11 contaminants are above health goals, led by pfos at 1.4× California’s Public Health Goal.
• Closer to Superfund sites than 54% 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 (86%), mostly chromium.
• Fine particles (PM2.5) average 5.5 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 98923

• Superfund sites nearbyA to C
• Factories and industrial sitesB to F
• Oil and gas wellsA
• Parks and nature nearbyA to C
• Air qualityA
• Drinking water qualityC
• Pesticide useF
• Neighborhood health statusD to F
• Past wildfire impactsD to F
• Past flood impactsA
• Noise levelsA
• Radiation signalsB

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

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