District of Columbia, DC

ZIP 20566

In ZIP 20566, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: D.c. Water And Sewer Authority meets every EPA legal limit; 8 contaminants are above health goals, led by bromodichloromethane at 328× California’s Public Health Goal.
• Nearest Superfund site: Washington Navy Yard, 2.1 miles away.
• Largest share of modeled toxic air from industry: Elite Spice Inc. (47%), mostly ethylene oxide.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 20566

• Superfund sites nearbyD to F
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityD to F
• Drinking water qualityD
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsD

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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