Anchorage County, AK

ZIP 99501

In ZIP 99501, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Moa Municipality Of Anchorage has 1 contaminant at or over an EPA legal limit; 12 contaminants are above health goals, led by pfoa at 1,300× California’s Public Health Goal.
• Nearest Superfund site: Elmendorf Air Force Base, 1.1 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Tesoro - Anchorage Terminal (91%), mostly benzene.
• Fine particles (PM2.5) average 5.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.

Grades for ZIP 99501

• Superfund sites nearbyF
• Factories and industrial sitesB to C
• Oil and gas wellsB
• Air qualityA
• Drinking water qualityC to D
• Neighborhood health statusA to D
• Past wildfire impactsA
• Past flood impactsA
• Radiation signalsB to D

Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…