Harrison County, MO

ZIP 64424

In ZIP 64424, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Harrison County Pwsd 1 meets every EPA legal limit; 12 contaminants are above health goals, led by arsenic at 450× 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: Johnson Controls Inc-Albany (60%), mostly diisocyanates.
• Fine particles (PM2.5) average 6.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 143,573 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 64424

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsA to C
• Parks and nature nearbyD
• Air qualityA
• Drinking water qualityD
• Pesticide useF
• Neighborhood health statusF
• Past wildfire impactsA
• Past flood impactsB to C
• Noise levelsA
• Radiation signalsD

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…