Clark County, AR

ZIP 71721

In ZIP 71721, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Whelen Springs Water Dept meets every EPA legal limit; 4 contaminants are above health goals, led by lead at 20× California’s Public Health Goal.
• Nearest Superfund site: Ouachita Nevada Wood Treater, 8.5 miles away.
• Largest share of modeled toxic air from industry: Gp Wood Products LLC Gurdon Plywood & Lumber Complex (96%), mostly acetaldehyde.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 36,554 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 71721

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

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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