Los Angeles County, CA

ZIP 91042

In ZIP 91042, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: San Antonio Canyon Msc has 1 contaminant at or over an EPA legal limit; 4 contaminants are above health goals, led by di(2-ethylhexyl) phthalate at 325× California’s Public Health Goal.
• Nearest Superfund site: San Fernando Valley (area 1), 6.8 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Torrance Refining Co LLC (22%), mostly ethylene oxide.
• Fine particles (PM2.5) average 9.5 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 91042

• Superfund sites nearbyD to F
• Factories and industrial sitesC
• Oil and gas wellsA to F
• Parks and nature nearbyB to F
• Air qualityB to F
• Drinking water qualityC to F
• Pesticide useB
• Neighborhood health statusB to C
• Past wildfire impactsF
• Past flood impactsA
• Noise levelsA to B
• Radiation signalsD

Based on 12 census tracts · compiled September 10, 2026 · how each grade works and its sources

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