Plumas County, CA

ZIP 96106

In ZIP 96106, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Portola has 1 contaminant at or over an EPA legal limit; 7 contaminants are above health goals, led by arsenic at 3,707× 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: Emerson Automation Solutions Final Control US LP (60%), mostly chromium.
• Fine particles (PM2.5) average 9.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1,825 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 96106

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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