Alleghany County, NC

ZIP 28668

In ZIP 28668, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sparta, Town Of meets every EPA legal limit; 8 contaminants are above health goals, led by trichloroacetic acid at 144× 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: U.S. Chemical Storage LLC (99%), mostly chromium.
• Fine particles (PM2.5) average 6.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 21,637 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 28668

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityA to F
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA
• Radiation signalsF

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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