Miami County, OH

ZIP 45318

In ZIP 45318, 10 of the 12 things we check have at least one part graded D or F.

• Drinking water: Troy City Pws meets every EPA legal limit; 11 contaminants are above health goals, led by bromodichloromethane at 109× California’s Public Health Goal.
• Nearest Superfund site: Miami County Incinerator, 0.8 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Hobart Brothers Co Filler Metals Operations Troy (39%), mostly chromium.
• Fine particles (PM2.5) average 8.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 173,753 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 45318

• Superfund sites nearbyA to F
• Factories and industrial sitesC to D
• Oil and gas wellsC to D
• Parks and nature nearbyD
• Air qualityD
• Drinking water qualityC to D
• Pesticide useF
• Neighborhood health statusD to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsD to F

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

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