Yankton County, SD

ZIP 57046

In ZIP 57046, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Yankton has 1 contaminant at or over an EPA legal limit; 11 contaminants are above health goals, led by pentachlorophenol at 23× 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: Wilson Trailer Co (38%), mostly acrolein.
• Fine particles (PM2.5) average 6.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 152,825 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 57046

• Superfund sites nearbyA
• Factories and industrial sitesB
• Oil and gas wellsB
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityC to D
• Pesticide useF
• Neighborhood health statusC
• 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…