Washoe County, NV

ZIP 89431

In ZIP 89431, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Canyon Gid meets every EPA legal limit; 7 contaminants are above health goals, led by arsenic at 1,997× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Tesla Gigafactory (99%), mostly cobalt compounds.
• Fine particles (PM2.5) average 9.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 11,722 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 89431

• Superfund sites nearbyA
• Factories and industrial sitesD to F
• Oil and gas wellsA
• Parks and nature nearbyB
• Air qualityF
• Drinking water qualityC
• Pesticide useA to B
• Neighborhood health statusB to F
• Past wildfire impactsD
• Past flood impactsB
• Noise levelsA to F
• Radiation signalsD to F

Based on 14 census tracts · compiled October 25, 2026 · how each grade works and its sources

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