Wake County, NC

ZIP 27518

In ZIP 27518, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Holly Springs, Town Of has 2 contaminants at or over an EPA legal limit; 9 contaminants are above health goals, led by pfos at 9.6× California’s Public Health Goal.
• Nearest Superfund site: North Carolina State University (lot 86, Farm Unit #1), 6.3 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Kellogg'S Snacks - Cary Bakery (57%), mostly formaldehyde.
• Fine particles (PM2.5) average 8.2 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 27518

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

Based on 8 census tracts · compiled October 25, 2026 · how each grade works and its sources

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