Lyon County, NV

ZIP 89444

In ZIP 89444, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Topaz Lake Water Co Inc has 1 contaminant at or over an EPA legal limit; 8 contaminants are above health goals, led by arsenic at 6,321× California’s Public Health Goal.
• Closer to Superfund sites than 84% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Carboline Co Dayton (38%), mostly certain glycol ethers.
• Fine particles (PM2.5) average 6.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 105,070 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 89444

• Superfund sites nearbyC to F
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityA
• Drinking water qualityD to F
• Pesticide useC to F
• Neighborhood health statusD to F
• Past wildfire impactsA to F
• Past flood impactsB
• Noise levelsA
• Radiation signalsD to F

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

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