Santa Clara County, CA
ZIP 95020
In ZIP 95020, 8 of the 12 things we check have at least one part graded D or F.
- Drinking water: Santa Clara Valley Water District meets every EPA legal limit; 14 contaminants are above health goals, led by pfos at 3.7× California’s Public Health Goal.
- Closer to Superfund sites than 58% of U.S. neighborhoods, with no listed site within 10 miles of its center.
- Largest share of modeled toxic air from industry: Tesla Inc. (60%), mostly cobalt compounds.
- Fine particles (PM2.5) average 9.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
- About 162,482 kg of agricultural pesticides are applied in the county each year.
Grades for ZIP 95020
- Superfund sites nearbyA to C
- Factories and industrial sitesA to C
- Oil and gas wellsA to D
- Parks and nature nearbyB to F
- Air qualityA to F
- Drinking water qualityB to F
- Pesticide useC to F
- Neighborhood health statusA to C
- Past wildfire impactsC to F
- Past flood impactsB to C
- Noise levelsA to D
- Radiation signalsC to D
Based on 16 census tracts · compiled September 10, 2026 · how each grade works and its sources
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