Cecil County, MD

ZIP 21902

In ZIP 21902, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Williams Mobile Home Park meets every EPA legal limit; 12 contaminants are above health goals, led by arsenic at 1,675× California’s Public Health Goal.
• Nearest Superfund site: Woodlawn County Landfill, 4.9 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Croda Inc (89%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.2 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 21902

• Superfund sites nearbyD
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityB
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsD
• Radiation signalsC

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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