Gallia County, OH

ZIP 45623

In ZIP 45623, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Gallipolis Pws has 1 contaminant at or over an EPA legal limit; 11 contaminants are above health goals, led by pfos at 1.2× 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: Thistle Processing LLC (89%), mostly nickel.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 14,333 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 45623

• Superfund sites nearbyA
• Factories and industrial sitesC to D
• Oil and gas wellsC to F
• Parks and nature nearbyB
• Air qualityB
• Drinking water qualityC to D
• Pesticide useC to D
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsF

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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