Wake County, NC

ZIP 27603

In ZIP 27603, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Olde Mill Trace S/D meets every EPA legal limit; 10 contaminants are above health goals, led by lead at 30× California’s Public Health Goal.
• Nearest Superfund site: North Carolina State University (lot 86, Farm Unit #1), 5.7 miles away.
• Largest share of modeled toxic air from industry: Mallinckrodt Pharmaceuticals (70%), mostly nitrobenzene.
• Fine particles (PM2.5) average 8.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 205,031 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 27603

• Superfund sites nearbyA to D
• Factories and industrial sitesA to C
• Oil and gas wellsA
• Parks and nature nearbyC to F
• Air qualityB to D
• Drinking water qualityA to F
• Pesticide useC to F
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsB to C
• Noise levelsA to F
• Radiation signalsC

Based on 23 census tracts · compiled September 10, 2026 · how each grade works and its sources

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