Cecil County, MD

ZIP 21920

In ZIP 21920, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pleasant Hill Mobile Home Park meets every EPA legal limit; 1 contaminant is above health goals, led by pfoa at 257× California’s Public Health Goal.
• Nearest Superfund site: Spectron, Inc., 1.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Goodhart Sons Inc. (51%), mostly chromium.
• Fine particles (PM2.5) average 6.8 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 21920

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

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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