Portsmouth city, VA

ZIP 23704

In ZIP 23704, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Naval Support Activity Portsmouth meets every EPA legal limit; 6 contaminants are above health goals, led by bromodichloromethane at 149× California’s Public Health Goal.
• Nearest Superfund site: Atlantic Wood Industries, Inc., 0.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Bae Systems Norfolk Ship Repair (77%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 23704

• Superfund sites nearbyF
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityC
• Drinking water qualityC
• Neighborhood health statusA to F
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA to D
• Radiation signalsA to B

Based on 12 census tracts · compiled October 25, 2026 · how each grade works and its sources

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