Jasper County, IA

ZIP 50251

In ZIP 50251, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Oskaloosa Municipal Water Dept meets every EPA legal limit; 14 contaminants are above health goals, led by lead at 50× California’s Public Health Goal.
• Nearest Superfund site: Midwest Manufacturing/north Farm, 7.7 miles away.
• Largest share of modeled toxic air from industry: Cargill Corn Milling (81%), mostly acrolein.
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 294,888 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 50251

• Superfund sites nearbyA to C
• Factories and industrial sitesC
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityB
• Drinking water qualityC to F
• Pesticide useF
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsF
• Noise levelsA to F
• Radiation signalsD to F

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

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