Queen Anne's County, MD

ZIP 21628

In ZIP 21628, 1 of the 12 things we check have at least one part graded D or F.

• Drinking water: Town Of Millington meets every EPA legal limit; 3 contaminants are above health goals, led by chloroform at 5.6× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Tnemec Co Inc (45%), mostly diisocyanates.
• Fine particles (PM2.5) average 7.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 193,271 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 21628

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

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

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