Sevier County, TN

ZIP 37863

In ZIP 37863, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sevier County Water Department meets every EPA legal limit; 2 contaminants are above health goals, led by tthm at 48× Peer-Reviewed Research.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Johnson Matthey US 2 LLC C/O Johnson Matthey Catalysts (79%), mostly nickel.
• Fine particles (PM2.5) average 6.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 9,309 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 37863

• Superfund sites nearbyA
• Factories and industrial sitesB to F
• Oil and gas wellsA to B
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityA to B
• Pesticide useB to C
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA
• Radiation signalsC to F

Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…