Baltimore County, MD

ZIP 21105

In ZIP 21105, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: York Water Co meets every EPA legal limit; 11 contaminants are above health goals, led by pfos at 1.6× California’s Public Health Goal.
• Nearest Superfund site: York County Solid Waste and Refuse Authority Landfill, 8.6 miles away.
• Largest share of modeled toxic air from industry: Tate Access Floors Inc. (51%), mostly chromium.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 87,878 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 21105

• Superfund sites nearbyA
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityC
• Pesticide useD
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA
• Radiation signalsF

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

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