Humboldt County, NV

ZIP 89438

In ZIP 89438, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Golconda Gid meets every EPA legal limit; 9 contaminants are above health goals, led by arsenic at 750× 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: Nevada Gold Mines LLC - Turquoise Ridge (54%), mostly chromium compounds.
• Fine particles (PM2.5) average 5.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 507,216 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 89438

• Superfund sites nearbyA
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityD
• Pesticide useF
• Neighborhood health statusD
• Past wildfire impactsF
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…