San Joaquin County, CA

ZIP 95366

In ZIP 95366, 12 of the 12 things we check have at least one part graded D or F.

• Drinking water: Oakwood Lake Water District-Subdivision has 1 contaminant at or over an EPA legal limit; 8 contaminants are above health goals, led by arsenic at 3,404× California’s Public Health Goal.
• Nearest Superfund site: Sharpe Army Depot, 4.5 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Hogan Manufacturing Inc (42%), mostly chromium.
• Fine particles (PM2.5) average 8.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,500,402 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 95366

• Superfund sites nearbyA to D
• Factories and industrial sitesC to D
• Oil and gas wellsA to F
• Parks and nature nearbyC to D
• Air qualityB to F
• Drinking water qualityC to F
• Pesticide useF
• Neighborhood health statusB to D
• Past wildfire impactsC to F
• Past flood impactsC to F
• Noise levelsA to D
• Radiation signalsD

Based on 6 census tracts · compiled September 10, 2026 · how each grade works and its sources

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