Lancaster County, SC

ZIP 29720

In ZIP 29720, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Union County Water System meets every EPA legal limit; 10 contaminants are above health goals, led by pfoa at 329× California’s Public Health Goal.
• Nearest Superfund site: Leonard Chemical Co., Inc., 3.1 miles away.
• Largest share of modeled toxic air from industry: Jim Myers & Sons Inc (69%), mostly chromium.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 10,419 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 29720

• Superfund sites nearbyA to D
• Factories and industrial sitesA to D
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityA to C
• Drinking water qualityC to F
• Pesticide useB to D
• Neighborhood health statusA to F
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsA to D

Based on 16 census tracts · compiled October 25, 2026 · how each grade works and its sources

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