Lamar County, MS

ZIP 39455

In ZIP 39455, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Progress Comm Water Assn meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 582× 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: C L Dews & Sons Foundry & Machinery Co Inc (61%), mostly chromium.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 14,503 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 39455

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

Based on 9 census tracts · compiled October 25, 2026 · how each grade works and its sources

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