Montgomery County, IA

ZIP 50847

In ZIP 50847, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Southwest Reg Water District (Red Oak) meets every EPA legal limit; 8 contaminants are above health goals, led by chloroform at 5× California’s Public Health Goal.
• Nearest Superfund site: Red Oak City Landfill, 4.6 miles away.
• Largest share of modeled toxic air from industry: Green Plains Shenandoah LLC (37%), mostly acrolein.
• Fine particles (PM2.5) average 6.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 165,558 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 50847

• Superfund sites nearbyA
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityB
• Pesticide useF
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsD
• Noise levelsA
• Radiation signalsF

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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