Walsh County, ND

ZIP 58270

In ZIP 58270, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Walsh Rural Water District meets every EPA legal limit; 6 contaminants are above health goals, led by bromodichloromethane at 147× California’s Public Health Goal.
• 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: Nordic Fiberglass Inc. (96%), mostly styrene.
• Fine particles (PM2.5) average 6.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 678,889 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 58270

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

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

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