Davis County, IA

ZIP 52552

In ZIP 52552, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ottumwa Water Works meets every EPA legal limit; 15 contaminants are above health goals, led by arsenic at 1,000× California’s Public Health Goal.
• Nearest Superfund site: John Deere (ottumwa Works Landfills), 2.1 miles away.
• Largest share of modeled toxic air from industry: Cargill Corn Milling (71%), mostly acrolein.
• Fine particles (PM2.5) average 6.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 136,301 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 52552

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

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

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