Charles County, MD

ZIP 20622

In ZIP 20622, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Charlotte Hall has 1 contaminant at or over an EPA legal limit; 7 contaminants are above health goals, led by arsenic at 1,011× California’s Public Health Goal.
• Closer to Superfund sites than 57% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Carry-On Trailer Corp (36%), mostly lead.
• Fine particles (PM2.5) average 6.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 64,785 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 20622

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

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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