Los Angeles County, CA

ZIP 90280

In ZIP 90280, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Gswc - Hollydale has 1 contaminant at or over an EPA legal limit; 10 contaminants are above health goals, led by pfos at 12× California’s Public Health Goal.
• Nearest Superfund site: Southern Avenue Industrial Area, 2.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Techni-Cast Corp (30%), mostly cobalt.
• Fine particles (PM2.5) average 13.2 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 90280

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

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

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