Nevada County, CA

ZIP 95986

In ZIP 95986, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Donner Summit Public Utility District meets every EPA legal limit; 7 contaminants are above health goals, led by lead at 923× California’s Public Health Goal.
• Closer to Superfund sites than 53% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Elite Spice Inc. (52%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 5,533 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 95986

• Superfund sites nearbyC
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityC to F
• Pesticide useC
• Neighborhood health statusD
• Past wildfire impactsC
• Past flood impactsB
• Radiation signalsD

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

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