Santa Barbara County, CA

ZIP 93436

In ZIP 93436, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Jonata Homeowners Association has 2 contaminants at or over an EPA legal limit; 3 contaminants are above health goals, led by arsenic at 4,214× 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: Phillips 66 Co-Santa Maria Refinery (61%), mostly naphthalene.
• Fine particles (PM2.5) average 5.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1,826,041 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 93436

• Superfund sites nearbyA to C
• Factories and industrial sitesA to C
• Oil and gas wellsA to F
• Parks and nature nearbyA to C
• Air qualityA
• Drinking water qualityB to F
• Pesticide useD to F
• Neighborhood health statusA to D
• Past wildfire impactsA to F
• Past flood impactsB
• Noise levelsA to C
• Radiation signalsB to D

Based on 15 census tracts · compiled October 25, 2026 · how each grade works and its sources

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