Knox County, TN
ZIP 37909
In ZIP 37909, 7 of the 12 things we check have at least one part graded D or F.
- Drinking water: West Knox Utility District meets every EPA legal limit; 6 contaminants are above health goals, led by total haloacetic acids (haa5) at 2.8× Peer-Reviewed Research.
- Nearest Superfund site: Smokey Mountain Smelters, 5.6 miles away.
- Largest share of modeled toxic air from industry: Cmc Steel Tennessee (70%), mostly chromium compounds.
- Fine particles (PM2.5) average 8.7 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 37909
- Superfund sites nearbyA to D
- Factories and industrial sitesD to F
- Oil and gas wellsA to B
- Parks and nature nearbyD to F
- Air qualityC to F
- Drinking water qualityC
- Pesticide useB to C
- Neighborhood health statusB to F
- Past wildfire impactsA
- Past flood impactsB
- Noise levelsA to D
- Radiation signalsD to F
Based on 8 census tracts · compiled September 10, 2026 · how each grade works and its sources
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