Los Angeles County, CA

ZIP 91405

In ZIP 91405, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Los Angeles-City, Dept. Of Water & Power meets every EPA legal limit; 23 contaminants are above health goals, led by pfos at 1.5× California’s Public Health Goal.
• Nearest Superfund site: San Fernando Valley (area 1), 4.4 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Certified Alloy Products Inc (32%), mostly ethylene oxide.
• Fine particles (PM2.5) average 11.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 250,208 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 91405

• Superfund sites nearbyF
• Factories and industrial sitesF
• Oil and gas wellsA to C
• Parks and nature nearbyC to D
• Air qualityF
• Drinking water qualityC
• Pesticide useB
• Neighborhood health statusA to C
• Past wildfire impactsD
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsF

Based on 16 census tracts · compiled October 25, 2026 · how each grade works and its sources

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