Calhoun County, AR

ZIP 71766

In ZIP 71766, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Se Bradley Co Water Assn meets every EPA legal limit; 7 contaminants are above health goals, led by dibromochloromethane at 186× California’s Public Health Goal.
• Closer to Superfund sites than 54% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Lanxess - Central (54%), mostly hydrazine.
• Fine particles (PM2.5) average 7.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 3,106 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 71766

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

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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