Darke County, OH

ZIP 45331

In ZIP 45331, 9 of the 12 things we check have at least one part graded D or F.

• Drinking water: Greenville City Pws has 1 contaminant at or over an EPA legal limit; 14 contaminants are above health goals, led by lead at 1,417× California’s Public Health Goal.
• Nearest Superfund site: Arcanum Iron & Metal, 5.1 miles away.
• Largest share of modeled toxic air from industry: The Andersons Marathon Holdings LLC - Greenville Facility (32%), mostly acrolein.
• Fine particles (PM2.5) average 8.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 303,540 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 45331

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

Based on 11 census tracts · compiled September 10, 2026 · how each grade works and its sources

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