Knott County, KY

ZIP 41722

In ZIP 41722, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hazard Water Department meets every EPA legal limit; 12 contaminants are above health goals, led by lead at 15× 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: Langley Gas Plant (100%), mostly n-hexane (hexane).
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 235 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 41722

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsD to F
• Parks and nature nearbyB to C
• Air qualityA
• Drinking water qualityC to D
• Pesticide useB to C
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsC to F
• Noise levelsA to B
• Radiation signalsD

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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