Knox County, TN

ZIP 37918

In ZIP 37918, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Northeast Knox U.d. meets every EPA legal limit; 9 contaminants are above health goals, led by arsenic at 275× California’s Public Health Goal.
• Nearest Superfund site: Smokey Mountain Smelters, 5.9 miles away.
• Largest share of modeled toxic air from industry: Cmc Steel Tennessee (65%), mostly chromium compounds.
• Fine particles (PM2.5) average 8.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 9,097 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 37918

• Superfund sites nearbyA to D
• Factories and industrial sitesB to D
• Oil and gas wellsA to B
• Parks and nature nearbyD to F
• Air qualityC to D
• Drinking water qualityC to D
• Pesticide useB to D
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA to D
• Radiation signalsD to F

Based on 15 census tracts · compiled September 10, 2026 · how each grade works and its sources

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