Pennington County, SD

ZIP 57703

In ZIP 57703, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rapid Valley Sanitary District has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by pfos at 5.7× California’s Public Health Goal.
• Nearest Superfund site: Ellsworth Air Force Base, 7.8 miles away.
• Largest share of modeled toxic air from industry: Gcc Dacotah (85%), mostly chromium compounds.
• Fine particles (PM2.5) average 5.4 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 57703

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

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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