Delaware County, OH

ZIP 43066

In ZIP 43066, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Delaware City Pws meets every EPA legal limit; 13 contaminants are above health goals, led by lead at 54× California’s Public Health Goal.
• Closer to Superfund sites than 55% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Mills Metal Finishing (42%), mostly chromium.
• Fine particles (PM2.5) average 8.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 133,342 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 43066

• Superfund sites nearbyA to C
• Factories and industrial sitesC
• Oil and gas wellsC
• Parks and nature nearbyC to D
• Air qualityD
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsF

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

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