Delaware County, IN

ZIP 47303

In ZIP 47303, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Dunkirk Water Department meets every EPA legal limit; 10 contaminants are above health goals, led by arsenic at 425× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Maxon Corp (95%), mostly chromium.
• Fine particles (PM2.5) average 8.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 170,644 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 47303

• Superfund sites nearbyA
• Factories and industrial sitesA to D
• Oil and gas wellsC to F
• Parks and nature nearbyC to F
• Air qualityC to D
• Drinking water qualityA to C
• Pesticide useD to F
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsF

Based on 16 census tracts · compiled October 25, 2026 · how each grade works and its sources

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