Yellowstone County, MT

ZIP 59002

In ZIP 59002, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mountain View Colony has 1 contaminant at or over an EPA legal limit; 4 contaminants are above health goals, led by arsenic at 375× California’s Public Health Goal.
• Nearest Superfund site: Lockwood Solvent Ground Water Plume, 6.7 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Phillips 66 Co Billings Refinery (54%), 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 144,896 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 59002

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

Based on 1 census tract · compiled September 10, 2026 · how each grade works and its sources

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