Grayson County, KY

ZIP 42726

In ZIP 42726, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hardin County Water District #2 meets every EPA legal limit; 9 contaminants are above health goals, led by pfos at 2.3× 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: Kentucky Chrome Works (64%), mostly chromium.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 48,204 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 42726

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsB to F
• Parks and nature nearbyA to C
• Air qualityB
• Drinking water qualityB to C
• Pesticide useF
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsB to C

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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