San Diego County, CA
ZIP 92103
In ZIP 92103, 9 of the 12 things we check have at least one part graded D or F.
- Drinking water: San Diego, City Of has 2 contaminants at or over an EPA legal limit; 17 contaminants are above health goals, led by pfhxs at 4.6× California Notification Level.
- 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: Steris Isomedix Services (54%), mostly ethylene oxide.
- Fine particles (PM2.5) average 9.6 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 92103
- Superfund sites nearbyA
- Factories and industrial sitesF
- Oil and gas wellsC to F
- Parks and nature nearbyB to C
- Air qualityF
- Drinking water qualityF
- Pesticide useB to D
- Neighborhood health statusA to D
- Past wildfire impactsA to D
- Past flood impactsA to F
- Noise levelsC to F
- Radiation signalsB to C
Based on 16 census tracts · compiled October 25, 2026 · how each grade works and its sources
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