Monterey County, CA

ZIP 93451

In ZIP 93451, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rancho Salinas Mbwc has 1 contaminant at or over an EPA legal limit; 10 contaminants are above health goals, led by arsenic at 838× California’s Public Health Goal.
• Nearest Superfund site: Klau/buena Vista Mine, 3.5 miles away.
• Largest share of modeled toxic air from industry: Chemical Waste Management Inc (100%), mostly asbestos (friable).
• Fine particles (PM2.5) average 6.2 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 93451

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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