Knox County, TN

ZIP 37924

In ZIP 37924, 6 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, 7.3 miles away.
• Largest share of modeled toxic air from industry: Royal Sterilization Systems (60%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.3 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 37924

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

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

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