Knox County, TN

ZIP 37918

In ZIP 37918, 7 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; 4 contaminants are above health goals, led by tthm at 50× Peer-Reviewed Research.
• Nearest Superfund site: Smokey Mountain Smelters, 5.9 miles away.
• Largest share of modeled toxic air from industry: Royal Sterilization Systems (90%), mostly ethylene oxide.
• 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 F
• Oil and gas wellsA to B
• Parks and nature nearbyC to D
• Air qualityC to D
• Drinking water qualityB
• Pesticide useA to C
• 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 October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…