Mason County, WV

ZIP 25187

In ZIP 25187, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Putnam P S D meets every EPA legal limit; 11 contaminants are above health goals, led by bromodichloromethane at 149× 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 (42%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 32,449 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 25187

• Superfund sites nearbyA
• Factories and industrial sitesC
• Oil and gas wellsD
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityD
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD

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

Loading the full report, with every source…