Dubuque County, IA

ZIP 52003

In ZIP 52003, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Dubuque Water Works has 2 contaminants at or over an EPA legal limit; 12 contaminants are above health goals, led by lead at 46× California’s Public Health Goal.
• Nearest Superfund site: Peoples Natural Gas Co., 1.2 miles away.
• Largest share of modeled toxic air from industry: Henderson Products Inc (40%), mostly chromium.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 210,594 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 52003

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

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

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