Benton County, WA

ZIP 98944

In ZIP 98944, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: West Richland City Of meets every EPA legal limit; 14 contaminants are above health goals, led by pfos at 2.1× California’s Public Health Goal.
• Nearest Superfund site: Hanford 200-Area (usdoe), 3.4 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Triumph Actuation Systems-Yakima (75%), mostly chromium.
• Fine particles (PM2.5) average 7.7 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 98944

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

Based on 13 census tracts · compiled September 10, 2026 · how each grade works and its sources

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