Los Angeles County, CA

ZIP 91767

In ZIP 91767, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: West End Consolidated Water Company has 1 contaminant at or over an EPA legal limit; 8 contaminants are above health goals, led by pfos at 3× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Sterigenics-Ontario Facility (59%), mostly ethylene oxide.
• Fine particles (PM2.5) average 12.6 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 91767

• Superfund sites nearbyA
• Factories and industrial sitesD
• Oil and gas wellsC to F
• Parks and nature nearbyD to F
• Air qualityF
• Drinking water qualityD to F
• Pesticide useB to D
• Neighborhood health statusB to C
• Past wildfire impactsC to D
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsC

Based on 15 census tracts · compiled September 10, 2026 · how each grade works and its sources

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