San Joaquin County, CA

ZIP 95320

In ZIP 95320, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Riverbank, City Of meets every EPA legal limit; 14 contaminants are above health goals, led by lead at 57× California’s Public Health Goal.
• Nearest Superfund site: Riverbank Army Ammunition Plant, 4.5 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Hogan Manufacturing Inc Lift-U Div (58%), mostly chromium.
• Fine particles (PM2.5) average 9.0 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 95320

• Superfund sites nearbyA to D
• Factories and industrial sitesB to F
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityD to F
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusC to D
• Past wildfire impactsA to C
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsC to D

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

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