Dakota County, MN

ZIP 55121

In ZIP 55121, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Inver Grove Heights meets every EPA legal limit; 10 contaminants are above health goals, led by arsenic at 125× California’s Public Health Goal.
• Nearest Superfund site: Twin Cities Air Force Reserve Base (small Arms Range Landfill), 1.9 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: St Paul Park Refining Co LLC (38%), mostly cobalt compounds.
• Fine particles (PM2.5) average 8.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 219,011 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 55121

• Superfund sites nearbyA to D
• Factories and industrial sitesF
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityD to F
• Drinking water qualityC
• Pesticide useC to D
• Neighborhood health statusA to C
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to D
• Radiation signalsD

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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