San Diego County, CA

ZIP 92155

In ZIP 92155, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sweetwater Authority has 1 contaminant at or over an EPA legal limit; 14 contaminants are above health goals, led by pfhxs at 1.9× 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: General Dynamics (Nassco) (51%), mostly ethylbenzene.
• Fine particles (PM2.5) average 9.5 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 92155

• Superfund sites nearbyA
• Factories and industrial sitesF
• Oil and gas wellsC
• Parks and nature nearbyB
• Air qualityF
• Drinking water qualityC to F
• Pesticide useB
• Neighborhood health statusA
• Past wildfire impactsA
• Past flood impactsD
• Noise levelsA

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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