Santa Barbara County, CA

ZIP 93437

In ZIP 93437, 4 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, 4.0 miles away.
• Largest share of modeled toxic air from industry: Phillips 66 Co-Santa Maria Refinery (53%), mostly naphthalene.
• Fine particles (PM2.5) average 6.5 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 93437

• Superfund sites nearbyC
• Factories and industrial sitesB
• Oil and gas wellsC to F
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityD
• Pesticide useF
• Neighborhood health statusA to C
• Past wildfire impactsD
• Past flood impactsB
• Noise levelsA
• Radiation signalsC

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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