Santa Barbara County, CA

ZIP 93455

In ZIP 93455, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ray Water Company has 3 contaminants at or over an EPA legal limit; 8 contaminants are above health goals, led by lead at 167× 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 93455

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

Based on 15 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…