Santa Barbara County, CA

ZIP 93434

In ZIP 93434, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Woodlands Development meets every EPA legal limit; 11 contaminants are above health goals, led by lead at 35× California’s Public Health Goal.
• Nearest Superfund site: Casmalia Resources, 4.3 miles away.
• Largest share of modeled toxic air from industry: Phillips 66 Co-Santa Maria Refinery (94%), mostly hydrogen sulfide.
• Fine particles (PM2.5) average 7.0 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 93434

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

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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