Polk County, AR

ZIP 71937

In ZIP 71937, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mccurtain Co. Rwd #6 (Kiamichi) meets every EPA legal limit; 7 contaminants are above health goals, led by chloroform at 155× California’s Public Health Goal.
• Nearest Superfund site: Mid-South Wood Products, 5.3 miles away.
• Largest share of modeled toxic air from industry: Sterling Machinery Co. (100%), mostly chromium.
• Fine particles (PM2.5) average 7.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 47,693 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 71937

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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