San Diego County, CA

ZIP 92136

In ZIP 92136, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sweetwater Authority has 3 contaminants at or over an EPA legal limit; 23 contaminants are above health goals, led by lead at 14× California’s Public Health Goal.
• 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) (64%), mostly ethylbenzene.
• Fine particles (PM2.5) average 9.4 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 92136

• Superfund sites nearbyA
• Factories and industrial sitesD
• Oil and gas wellsC
• Parks and nature nearbyD to F
• Air qualityF
• Drinking water qualityF
• Pesticide useC
• Neighborhood health statusB
• Past wildfire impactsC
• Past flood impactsA to D
• Noise levelsD
• Radiation signalsC

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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