Union County, AR

ZIP 71758

In ZIP 71758, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Lisbon Water Association meets every EPA legal limit; 8 contaminants are above health goals, led by dibromochloromethane at 88× California’s Public Health Goal.
• Nearest Superfund site: Macmillan Ring Free Oil, 7.0 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Lanxess - Central (96%), mostly hydrazine.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,700 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 71758

• Superfund sites nearbyD
• Factories and industrial sitesD
• Oil and gas wellsF
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityD
• Pesticide useC
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsC

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

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