Dallas County, IA

ZIP 50266

In ZIP 50266, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Fox Creek Benefitted Wtr. District meets every EPA legal limit; 8 contaminants are above health goals, led by dibromochloromethane at 57× California’s Public Health Goal.
• Nearest Superfund site: Railroad Avenue Groundwater Contamination, 2.6 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Cb&I Storage Tank Solutions LLC. (54%), mostly chromium.
• Fine particles (PM2.5) average 7.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 255,688 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 50266

• Superfund sites nearbyD to F
• Factories and industrial sitesB to F
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityB to C
• Drinking water qualityC to D
• Pesticide useC to F
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsF
• Noise levelsA to D
• Radiation signalsF

Based on 11 census tracts · compiled October 25, 2026 · how each grade works and its sources

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