Charleston County, SC

ZIP 29487

In ZIP 29487, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: St John's Water (Sc1020002) has 2 contaminants at or over an EPA legal limit; 11 contaminants are above health goals, led by pfos at 7.2× California’s Public Health Goal.
• Nearest Superfund site: Geiger (c & M Oil), 7.4 miles away.
• Largest share of modeled toxic air from industry: Lanxess Corp (48%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 199,042 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 29487

• Superfund sites nearbyA
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityF
• Pesticide useF
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…