Howard County, AR

ZIP 71831

In ZIP 71831, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Southwest Arkansas Water System meets every EPA legal limit; 8 contaminants are above health goals, led by bromodichloromethane at 252× 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: Jan-Eze Plating (90%), mostly chromium compounds.
• Fine particles (PM2.5) average 7.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 14,731 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 71831

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

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

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