Montgomery County, OH

ZIP 45423

In ZIP 45423, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Dayton Public Water System has 2 contaminants at or over an EPA legal limit; 18 contaminants are above health goals, led by lead at 957× California’s Public Health Goal.
• Nearest Superfund site: Behr Dayton Thermal System Voc Plume, 1.5 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Plating Technology Inc. Dayton Plant (63%), mostly nickel compounds.
• Fine particles (PM2.5) average 9.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 106,635 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 45423

• Superfund sites nearbyF
• Factories and industrial sitesF
• Oil and gas wellsB
• Parks and nature nearbyD
• Air qualityF
• Drinking water qualityF
• Pesticide useC
• Neighborhood health statusC
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsD
• Radiation signalsD

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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