Placer County, CA

ZIP 95663

In ZIP 95663, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Placer Cwa - Foothill has 2 contaminants at or over an EPA legal limit; 15 contaminants are above health goals, led by pfos at 2.4× 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: Mitsubishi Chemical Carbon Fiber & Composites Inc. (68%), mostly hydrogen cyanide.
• Fine particles (PM2.5) average 9.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 85,451 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 95663

• Superfund sites nearbyA
• Factories and industrial sitesA to C
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityF
• Drinking water qualityC to F
• Pesticide useC to F
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA to B
• Radiation signalsB to D

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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