Butler County, OH

ZIP 45055

In ZIP 45055, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hamilton Public Water System has 1 contaminant at or over an EPA legal limit; 8 contaminants are above health goals, led by lead at 100× California’s Public Health Goal.
• Nearest Superfund site: Armco Incorporation-Hamilton Plant, 0.8 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: The Shepherd Color Co (31%), mostly chromium.
• Fine particles (PM2.5) average 8.6 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 45055

• Superfund sites nearbyF
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityD
• Drinking water qualityD to F
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsB
• Radiation signalsD

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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