Calhoun County, SC

ZIP 29135

In ZIP 29135, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Orangeburg Dpu (Sc3810001) meets every EPA legal limit; 7 contaminants are above health goals, led by pfos at 2.6× California’s Public Health Goal.
• Nearest Superfund site: Scrdi Bluff Road, 9.3 miles away.
• Largest share of modeled toxic air from industry: Dak Americas Llc-Columbia Site (73%), mostly acetaldehyde.
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 334,758 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 29135

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

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

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