Foster County, ND

ZIP 58421

In ZIP 58421, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Central Plains Water District meets every EPA legal limit; 10 contaminants are above health goals, led by lithium at 8.9× the USGS health-based screening level.
• 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: Dakota Growers Pasta Company-Carrington Plant (97%), mostly sulfuryl fluoride.
• Fine particles (PM2.5) average 6.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 264,187 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 58421

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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