San Diego County, CA

ZIP 92003

In ZIP 92003, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Camp Pendleton (South) has 2 contaminants at or over an EPA legal limit; 17 contaminants are above health goals, led by pfos at 27× California’s Public Health Goal.
• Closer to Superfund sites than 93% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Steris Inc (84%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.7 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 92003

• Superfund sites nearbyD to F
• Factories and industrial sitesA to C
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityB to C
• Drinking water qualityC to F
• Pesticide useB to D
• Neighborhood health statusA to C
• Past wildfire impactsD
• Past flood impactsA
• Noise levelsA to B
• Radiation signalsB to C

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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