Butler County, OH

ZIP 45011

In ZIP 45011, 10 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hamilton Public Water System meets every EPA legal limit; 5 contaminants are above health goals, led by pfoa at 314× California’s Public Health Goal.
• Nearest Superfund site: Chem-Dyne, 0.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Evertz Technology Services Inc. (43%), mostly chromium.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 100,411 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 45011

• Superfund sites nearbyD to F
• Factories and industrial sitesD to F
• Oil and gas wellsA to D
• Parks and nature nearbyB to D
• Air qualityC to F
• Drinking water qualityB to D
• Pesticide useC to D
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsD to F

Based on 23 census tracts · compiled October 25, 2026 · how each grade works and its sources

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