Monterey County, CA

ZIP 93426

In ZIP 93426, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Nacimiento Water Company meets every EPA legal limit; 9 contaminants are above health goals, led by arsenic at 344× California’s Public Health Goal.
• Nearest Superfund site: Klau/buena Vista Mine, 3.5 miles away.
• Largest share of modeled toxic air from industry: Lubrizol Advanced Materials Inc. (85%), mostly diethanolamine.
• Fine particles (PM2.5) average 6.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 901,427 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 93426

• Superfund sites nearbyC to F
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityA to C
• Pesticide useF
• Neighborhood health statusC
• Past wildfire impactsD to F
• Past flood impactsC
• Noise levelsA
• Radiation signalsC

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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