Johnson County, AR

ZIP 72840

In ZIP 72840, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Scranton Waterworks meets every EPA legal limit; 7 contaminants are above health goals, led by lead at 64× 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: Greenville Tube Co LLC (100%), mostly 1-bromopropane.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 18,243 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 72840

• Superfund sites nearbyA
• Factories and industrial sitesB to C
• Oil and gas wellsD
• Parks and nature nearbyC to D
• Air qualityB
• Drinking water qualityC to F
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsC

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…