Darke County, OH

ZIP 45308

In ZIP 45308, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Greenville City Pws meets every EPA legal limit; 10 contaminants are above health goals, led by lead at 323× California’s Public Health Goal.
• Nearest Superfund site: Miami County Incinerator, 7.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Midmark Corp (86%), 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 45308

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

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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