Fairbanks North Star County, AK

ZIP 99705

In ZIP 99705, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Twin Springs Water has 1 contaminant at or over an EPA legal limit; 3 contaminants are above health goals, led by arsenic at 3,358× California’s Public Health Goal.
• Nearest Superfund site: Eielson Air Force Base, 5.0 miles away.
• Largest share of modeled toxic air from industry: Fort Knox Mine (36%), mostly benzene.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 99705

• Superfund sites nearbyD to F
• Factories and industrial sitesA to C
• Oil and gas wellsA
• Air qualityB to C
• Drinking water qualityC to F
• Neighborhood health statusA to C
• Past wildfire impactsA to F
• Past flood impactsA
• Radiation signalsC

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

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