Clark County, OH

ZIP 45503

In ZIP 45503, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Clark County Limecrest Pws meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 177× California’s Public Health Goal.
• Nearest Superfund site: Donnelsville Contaminated Aquifer, 7.7 miles away.
• Largest share of modeled toxic air from industry: Fairborn Cement Co (24%), mostly nickel compounds.
• Fine particles (PM2.5) average 8.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 148,765 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 45503

• Superfund sites nearbyA to D
• Factories and industrial sitesB to D
• Oil and gas wellsA
• Parks and nature nearbyB to C
• Air qualityD to F
• Drinking water qualityB to C
• Pesticide useD to F
• Neighborhood health statusB to F
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsF

Based on 17 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…