Minnehaha County, SD

ZIP 57055

In ZIP 57055, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sioux Falls meets every EPA legal limit; 6 contaminants are above health goals, led by lithium at 5.8× the USGS health-based screening level.
• Nearest Superfund site: Williams Pipe Line Co. Disposal Pit, 6.1 miles away.
• Largest share of modeled toxic air from industry: Diamond Mowers Inc. (49%), mostly chromium.
• Fine particles (PM2.5) average 6.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 292,411 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 57055

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

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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