Wicomico County, MD

ZIP 21804

In ZIP 21804, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Boh-Nak Mobile Home Park has 2 contaminants at or over an EPA legal limit; 6 contaminants are above health goals, led by pfhxs at 2.7× California Notification Level.
• 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: Trinity Sterile (86%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 122,817 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 21804

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

Based on 14 census tracts · compiled September 10, 2026 · how each grade works and its sources

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