Fremont County, WY

ZIP 82642

In ZIP 82642, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Broken Wrench Llc has 1 contaminant at or over an EPA legal limit; 8 contaminants are above health goals, led by lead at 32× 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: Hf Sinclair Casper Refining LLC (80%), mostly benzene.
• Fine particles (PM2.5) average 4.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 63,714 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 82642

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsB to D
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityC to F
• Pesticide useC to F
• Neighborhood health statusC to D
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsD to F

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

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