Hillsborough, FL

ZIP 33621

In ZIP 33621, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Fgua / Macdill has 1 contaminant at or over an EPA legal limit; 11 contaminants are above health goals, led by pfos at 5.4× California’s Public Health Goal.
• Nearest Superfund site: Raleigh Street Dump, 7.1 miles away.
• Largest share of modeled toxic air from industry: Advanced Airfoil Components (44%), mostly cobalt.
• Fine particles (PM2.5) average 7.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 2,111,467 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 33621

• Superfund sites nearbyC
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityB
• Drinking water qualityF
• Pesticide useF
• Neighborhood health statusA
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsB

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

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