Santa Cruz County, CA

ZIP 95066

In ZIP 95066, 7 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: Watkins-Johnson Co. (stewart Division Plant), 1.3 miles away.
• Largest share of modeled toxic air from industry: Tesla Inc. (72%), mostly cobalt compounds.
• Fine particles (PM2.5) average 6.5 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 95066

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

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

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