Santa Clara County, CA

ZIP 95033

In ZIP 95033, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: San Lorenzo Valley Water Dist meets every EPA legal limit; 19 contaminants are above health goals, led by pfos at 2.5× California’s Public Health Goal.
• Nearest Superfund site: Intersil Inc./siemens Components, 6.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Trical Inc (52%), mostly chloropicrin.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 702,318 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 95033

• Superfund sites nearbyC to F
• Factories and industrial sitesA to B
• Oil and gas wellsA to F
• Parks and nature nearbyB to C
• Air qualityA to B
• Drinking water qualityA to F
• Pesticide useC to F
• Neighborhood health statusB to C
• Past wildfire impactsC to F
• Past flood impactsA to C
• Noise levelsA
• Radiation signalsC

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

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