Los Angeles County, CA
ZIP 90254
In ZIP 90254, 5 of the 12 things we check have at least one part graded D or F.
- Drinking water: California Water Service Co. - Herm/Redo meets every EPA legal limit; 11 contaminants are above health goals, led by arsenic at 252× California’s Public Health Goal.
- Nearest Superfund site: Montrose Chemical Corp., 5.8 miles away (2 within 10 miles).
- Largest share of modeled toxic air from industry: Torrance Refining Co LLC (53%), mostly cobalt compounds.
- Fine particles (PM2.5) average 9.8 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 90254
- Superfund sites nearbyD
- Factories and industrial sitesF
- Oil and gas wellsF
- Parks and nature nearbyB to C
- Air qualityF
- Drinking water qualityC
- Pesticide useB to C
- Neighborhood health statusA
- Past wildfire impactsA
- Past flood impactsA
- Noise levelsA to D
Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources
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