Elmore County, ID

ZIP 83648

In ZIP 83648, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mountain Home Air Force Base meets every EPA legal limit; 10 contaminants are above health goals, led by arsenic at 1,200× California’s Public Health Goal.
• Nearest Superfund site: Mountain Home Air Force Base, 0.8 miles away.
• Largest share of modeled toxic air from industry: US Ecology Idaho Inc. (98%), mostly asbestos (friable).
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 539,232 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 83648

• Superfund sites nearbyF
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityC
• Pesticide useF
• Neighborhood health statusA
• Past wildfire impactsF
• Past flood impactsA
• Noise levelsA
• Radiation signalsF

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

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