Montgomery County, MD

ZIP 20912

In ZIP 20912, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Washington Suburban Sanitary Commission meets every EPA legal limit; 4 contaminants are above health goals, led by bromodichloromethane at 96× California’s Public Health Goal.
• Nearest Superfund site: Beltsville Agricultural Research Center (usda), 6.5 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Elite Spice Inc. (51%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 33,676 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 20912

• Superfund sites nearbyD
• Factories and industrial sitesD to F
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityD
• Drinking water qualityC
• Pesticide useB to D
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA

Based on 11 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…