Fresno County, CA

ZIP 93721

In ZIP 93721, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Fresno has 4 contaminants at or over an EPA legal limit; 34 contaminants are above health goals, led by vanadium at 1.4× California’s Public Health Goal.
• Nearest Superfund site: Purity Oil Sales, Inc., 1.7 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Betts Co (63%), mostly chromium.
• Fine particles (PM2.5) average 12.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 13,548,899 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 93721

• Superfund sites nearbyD to F
• Factories and industrial sitesF
• Oil and gas wellsA
• Parks and nature nearbyF
• Air qualityF
• Drinking water qualityF
• Pesticide useF
• Neighborhood health statusC to F
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA to D
• Radiation signalsD

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

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