Yellowstone County, MT

ZIP 59037

In ZIP 59037, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Huntley Yellowstone Co Water And Sewer meets every EPA legal limit; 8 contaminants are above health goals, led by arsenic at 575× California’s Public Health Goal.
• Nearest Superfund site: Lockwood Solvent Ground Water Plume, 7.1 miles away.
• Largest share of modeled toxic air from industry: Exxonmobil Billings Refinery (49%), mostly 1,3-butadiene.
• Fine particles (PM2.5) average 5.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 144,097 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 59037

• Superfund sites nearbyA to D
• Factories and industrial sitesA to C
• Oil and gas wellsA to D
• Parks and nature nearbyB to C
• Air qualityA
• Drinking water qualityA to C
• Pesticide useD to F
• Neighborhood health statusC to F
• Past wildfire impactsA to F
• 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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