Hardin County, OH

ZIP 45835

In ZIP 45835, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ada Village meets every EPA legal limit; 9 contaminants are above health goals, led by lead at 44× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Ineos Nitriles USA LLC (84%), mostly acrylonitrile.
• Fine particles (PM2.5) average 7.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 204,998 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 45835

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

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

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