Hillsborough, FL

ZIP 33603

In ZIP 33603, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: City Of Tampa Water Department has 2 contaminants at or over an EPA legal limit; 19 contaminants are above health goals, led by pfos at 5.4× California’s Public Health Goal.
• Nearest Superfund site: Kassauf-Kimerling Battery Disposal, 3.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Chromalloy Castings (54%), mostly cobalt.
• Fine particles (PM2.5) average 8.9 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 33603

• Superfund sites nearbyD to F
• Factories and industrial sitesD to F
• Oil and gas wellsA
• Parks and nature nearbyD to F
• Air qualityF
• Drinking water qualityC to F
• Pesticide useD to F
• Neighborhood health statusB to D
• Past wildfire impactsA
• Past flood impactsB to C
• Noise levelsA to D
• Radiation signalsB

Based on 11 census tracts · compiled September 10, 2026 · how each grade works and its sources

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