Santa Barbara County, CA

ZIP 93429

In ZIP 93429, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: American Water O&m, Llc - Vsfb meets every EPA legal limit; 10 contaminants are above health goals, led by arsenic at 1,233× 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 (95%), 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 93429

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

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

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