Sheridan County, MT

ZIP 59211

In ZIP 59211, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Outlook County Sewer And Water meets every EPA legal limit; 4 contaminants are above health goals, led by arsenic at 1,063× 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: Stateline Complex (100%), mostly benzene.
• Fine particles (PM2.5) average 6.2 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 164,595 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 59211

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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