Fairbanks North Star County, AK

ZIP 99703

In ZIP 99703, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Valley Water Company meets every EPA legal limit; 3 contaminants are above health goals, led by arsenic at 1,300× California’s Public Health Goal.
• Nearest Superfund site: Fort Wainwright, 9.0 miles away.
• Largest share of modeled toxic air from industry: Fort Knox Mine (65%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 99703

• Superfund sites nearbyF
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityC
• Drinking water qualityA to F
• Neighborhood health statusA
• Past wildfire impactsF
• Past flood impactsA
• Radiation signalsB

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

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