Warren County, OH

ZIP 45140

In ZIP 45140, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Western Water Company has 2 contaminants at or over an EPA legal limit; 10 contaminants are above health goals, led by pfos at 9× California’s Public Health Goal.
• Nearest Superfund site: Milford Contaminated Aquifer, 2.0 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: The Shepherd Color Co (37%), mostly cobalt compounds.
• Fine particles (PM2.5) average 9.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 93,781 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 45140

• Superfund sites nearbyC to F
• Factories and industrial sitesD to F
• Oil and gas wellsA to C
• Parks and nature nearbyB to D
• Air qualityD to F
• Drinking water qualityC to F
• Pesticide useA to F
• Neighborhood health statusA to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to B
• Radiation signalsC to D

Based on 18 census tracts · compiled October 25, 2026 · how each grade works and its sources

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