San Diego County, CA

ZIP 92011

In ZIP 92011, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Carlsbad Mwd meets every EPA legal limit; 11 contaminants are above health goals, led by lead at 6.7× California’s Public Health Goal.
• Closer to Superfund sites than 56% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Watkins Manufacturing (51%), mostly diisocyanates.
• Fine particles (PM2.5) average 8.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 344,328 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 92011

• Superfund sites nearbyA to C
• Factories and industrial sitesC
• Oil and gas wellsC
• Parks and nature nearbyD
• Air qualityD
• Drinking water qualityC
• Pesticide useC
• Neighborhood health statusB to C
• Past wildfire impactsD
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsC

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

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