Hancock County, MS

ZIP 39556

In ZIP 39556, 1 of the 12 things we check have at least one part graded D or F.

• Drinking water: Center W/A-Caesar System meets every EPA legal limit; 5 contaminants are above health goals, led by bromodichloromethane at 66× California’s Public Health Goal.
• Closer to Superfund sites than 55% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Sabic Innovative Plastics US LLC (55%), mostly acrylonitrile.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,891 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 39556

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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