Cecil County, MD

ZIP 21930

In ZIP 21930, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Indian Acres Club Of Chesapeake Bay meets every EPA legal limit; 3 contaminants are above health goals, led by dibromochloromethane at 9.4× California’s Public Health Goal.
• Closer to Superfund sites than 54% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Croda Inc (84%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 89,478 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 21930

• Superfund sites nearbyC
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityA to B
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsB

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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