Pennington County, SD

ZIP 57725

In ZIP 57725, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pine Grove meets every EPA legal limit; 2 contaminants are above health goals, led by arsenic at 1,500× California’s Public Health Goal.
• Closer to Superfund sites than 86% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Gcc Dacotah (66%), mostly chromium compounds.
• Fine particles (PM2.5) average 5.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 53,814 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 57725

• Superfund sites nearbyF
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityA to C
• Pesticide useD
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsD to F

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

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