San Diego County, CA
ZIP 92084
In ZIP 92084, 8 of the 12 things we check have at least one part graded D or F.
- Drinking water: San Diego County Water Authority has 2 contaminants at or over an EPA legal limit; 13 contaminants are above health goals, led by pfos at 6× California’s Public Health Goal.
- Closer to Superfund sites than 60% of U.S. neighborhoods, with no listed site within 10 miles of its center.
- Largest share of modeled toxic air from industry: Steris Inc (49%), mostly ethylene oxide.
- Fine particles (PM2.5) average 7.9 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 92084
- Superfund sites nearbyA to D
- Factories and industrial sitesB to C
- Oil and gas wellsA to C
- Parks and nature nearbyC to F
- Air qualityA to D
- Drinking water qualityD to F
- Pesticide useC to F
- Neighborhood health statusA to C
- Past wildfire impactsD to F
- Past flood impactsA
- Noise levelsA to D
- Radiation signalsC to D
Based on 14 census tracts · compiled September 10, 2026 · how each grade works and its sources
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