Cerro Gordo County, IA

ZIP 50433

In ZIP 50433, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ackley Municipal Water Works meets every EPA legal limit; 12 contaminants are above health goals, led by lead at 72× California’s Public Health Goal.
• Nearest Superfund site: Labounty, 9.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Zinpro Corp (62%), mostly cobalt compounds.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 297,444 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 50433

• Superfund sites nearbyA to C
• Factories and industrial sitesB to C
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityA to B
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusD
• Past wildfire impactsA
• Past flood impactsC to D
• Noise levelsA
• Radiation signalsD

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

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