Charles County, MD

ZIP 20632

In ZIP 20632, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Thunderbird Motel meets every EPA legal limit; 6 contaminants are above health goals, led by arsenic at 1,013× California’s Public Health Goal.
• Nearest Superfund site: Naval Surface Warfare Center - Dahlgren, 7.1 miles away.
• Largest share of modeled toxic air from industry: Stella-Jones Corp (36%), mostly sulfuric acid.
• Fine particles (PM2.5) average 6.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 43,120 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 20632

• Superfund sites nearbyC to D
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityB to D
• Pesticide useD to F
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsC

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

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