Dorchester County, SC

ZIP 29437

In ZIP 29437, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Harleyville Town Of (Sc1810002) meets every EPA legal limit; 9 contaminants are above health goals, led by lead at 11× 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: Holcim (US) Inc Holly Hill Plant (50%), mostly formaldehyde.
• Fine particles (PM2.5) average 6.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 80,803 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 29437

• Superfund sites nearbyA
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityC to D
• Pesticide useD to F
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC to D
• Noise levelsA to D
• Radiation signalsB

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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