Tulare County, CA

ZIP 93666

In ZIP 93666, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Monson Water System meets every EPA legal limit; 2 contaminants are above health goals, led by arsenic at 950× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Excelsior Inc. (57%), mostly chromium.
• Fine particles (PM2.5) average 11.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 5,378,638 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 93666

• Superfund sites nearbyA
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityF
• Drinking water qualityD
• Pesticide useF
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsD
• Radiation signalsD

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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