Los Angeles County, CA

ZIP 93591

In ZIP 93591, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Palmdale Water Dist. has 1 contaminant at or over an EPA legal limit; 16 contaminants are above health goals, led by vanadium at 1.1× California’s Public Health Goal.
• Closer to Superfund sites than 82% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Lockheed Martin Aeronautics Co (98%), mostly chromium.
• Fine particles (PM2.5) average 7.7 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 93591

• Superfund sites nearbyA to F
• Factories and industrial sitesB to C
• Oil and gas wellsA to C
• Parks and nature nearbyB to C
• Air qualityC
• Drinking water qualityB to F
• Pesticide useB to D
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA to C
• Noise levelsA
• Radiation signalsC to D

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

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