Johnson County, IA

ZIP 52241

In ZIP 52241, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Spring Valley Homeowners Assn. meets every EPA legal limit; 1 contaminant is above health goals, led by lead at 35× California’s Public Health Goal.
• Closer to Superfund sites than 63% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Adm Corn Processing (39%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 229,923 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 52241

• Superfund sites nearbyC to D
• Factories and industrial sitesC to D
• Oil and gas wellsA
• Parks and nature nearbyC to F
• Air qualityB to C
• Drinking water qualityC to F
• Pesticide useD to F
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsD to F
• Noise levelsA to D
• Radiation signalsD

Based on 9 census tracts · compiled September 10, 2026 · how each grade works and its sources

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