Marion County, TN

ZIP 37374

In ZIP 37374, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Tn American Sequatchie Valley meets every EPA legal limit; 5 contaminants are above health goals, led by tthm at 42× 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: Tennessee Alloys Co (93%), mostly polycyclic aromatic compounds.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 13,286 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 37374

• Superfund sites nearbyA
• Factories and industrial sitesB
• Oil and gas wellsC to D
• Parks and nature nearbyB to C
• Air qualityB
• Drinking water qualityC
• Pesticide useD to F
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsB to C

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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