Washington County, TN

ZIP 37656

In ZIP 37656, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Kingsport Water Dept has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by pfos at 5.9× 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: Eastman Chemical Co Tennessee Operations (96%), mostly methyl iodide.
• Fine particles (PM2.5) average 7.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 66,271 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 37656

• Superfund sites nearbyA
• Factories and industrial sitesB to D
• Oil and gas wellsA
• Parks and nature nearbyC to D
• Air qualityA to C
• Drinking water qualityB to F
• Pesticide useD to F
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsB
• Noise levelsA
• Radiation signalsD

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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