Williamson County, TN

ZIP 37027

In ZIP 37027, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Nolensville-College Grove U.d. has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by pfoa at 1,157× California’s Public Health Goal.
• 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: Tenneco Automotive (36%), mostly chromium.
• Fine particles (PM2.5) average 8.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 27,822 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 37027

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

Based on 24 census tracts · compiled September 10, 2026 · how each grade works and its sources

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