Santa Cruz County, CA

ZIP 95064

In ZIP 95064, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Santa Cruz Water Department meets every EPA legal limit; 17 contaminants are above health goals, led by lithium at 1.4× the USGS health-based screening level.
• Nearest Superfund site: Watkins-Johnson Co. (stewart Division Plant), 4.5 miles away.
• Largest share of modeled toxic air from industry: Trical Inc (85%), mostly chloropicrin.
• Fine particles (PM2.5) average 7.3 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 95064

• Superfund sites nearbyD
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyA to B
• Air qualityC
• Drinking water qualityC
• Pesticide useD to F
• Neighborhood health statusA to B
• Past wildfire impactsC
• Past flood impactsB
• Noise levelsA

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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