McCormick County, SC

ZIP 29821

In ZIP 29821, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Edgefield Co W&sa (1920001) meets every EPA legal limit; 7 contaminants are above health goals, led by trichloroacetic acid at 185× California’s Public Health Goal.
• Nearest Superfund site: Barite Hill/nevada Goldfields, 9.7 miles away.
• Largest share of modeled toxic air from industry: Kendall Patient Recovery LLC (39%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 167,930 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 29821

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

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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