DuPage County, IL

ZIP 60504

In ZIP 60504, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Naperville has 2 contaminants at or over an EPA legal limit; 13 contaminants are above health goals, led by arsenic at 190× California’s Public Health Goal.
• Nearest Superfund site: Dupage County Landfill/blackwell Forest Preserve, 4.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: W R Grace & Co (34%), mostly chromium.
• Fine particles (PM2.5) average 9.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 180,637 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 60504

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

Based on 15 census tracts · compiled October 25, 2026 · how each grade works and its sources

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