Polk County, NC

ZIP 28756

In ZIP 28756, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Fairfield Mtns-Apple Valley has 1 contaminant at or over an EPA legal limit; 8 contaminants are above health goals, led by di(2-ethylhexyl) phthalate at 133× California’s Public Health Goal.
• Nearest Superfund site: General Electric Co/shepherd Farm, 9.6 miles away.
• Largest share of modeled toxic air from industry: Basf Corp (22%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 15,333 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 28756

• Superfund sites nearbyA to C
• Factories and industrial sitesA to B
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityA to B
• Drinking water qualityA to F
• Pesticide useD to F
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsC to F

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…