Idaho County, ID

ZIP 83638

In ZIP 83638, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Fir Grove Estates meets every EPA legal limit; 5 contaminants are above health goals, led by arsenic at 1,150× California’s Public Health Goal.
• Closer to Superfund sites than 53% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Tamarack Mills (Dba Evergreen Forests) (100%), mostly lead.
• Fine particles (PM2.5) average 5.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 24,282 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 83638

• Superfund sites nearbyA to C
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityA to D
• Pesticide useF
• Neighborhood health statusC to F
• Past wildfire impactsC to F
• Past flood impactsA
• Noise levelsA
• Radiation signalsC to D

Based on 6 census tracts · compiled September 10, 2026 · how each grade works and its sources

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