Fairfax County, VA

ZIP 22042

In ZIP 22042, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Fairfax County Water Authority meets every EPA legal limit; 11 contaminants are above health goals, led by pfos at 2.3× California’s Public Health Goal.
• Nearest Superfund site: Washington Navy Yard, 9.0 miles away.
• Largest share of modeled toxic air from industry: Motiva Fairfax Terminal (26%), mostly benzene.
• Fine particles (PM2.5) average 8.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 3,774 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 22042

• Superfund sites nearbyA
• Factories and industrial sitesA to C
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityD
• Drinking water qualityC
• Pesticide useA to B
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to C
• Radiation signalsD

Based on 13 census tracts · compiled October 25, 2026 · how each grade works and its sources

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