Hawaii County, HI

ZIP 96738

In ZIP 96738, 1 of the 12 things we check have at least one part graded D or F.

• Drinking water: Waikoloa meets every EPA legal limit; 7 contaminants are above health goals, led by vanadium at 4× 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: Hawaii Electric Light Co Inc Keahole Generating Station (57%), mostly polycyclic aromatic compounds.
• Fine particles (PM2.5) average 3.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 96738

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA
• Air qualityA
• Drinking water qualityC to F
• Neighborhood health statusC

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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