Campbell County, WY

ZIP 82831

In ZIP 82831, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sheridan, City Of has 1 contaminant at or over an EPA legal limit; 9 contaminants are above health goals, led by lead at 30× 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: Basin Electric Dry Fork Station (100%), mostly chromium.
• Fine particles (PM2.5) average 5.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 17,727 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 82831

• Superfund sites nearbyA
• Factories and industrial sitesA to B
• Oil and gas wellsA to F
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityD to F
• Pesticide useD
• Neighborhood health statusB to D
• Past wildfire impactsA to F
• Past flood impactsA
• Noise levelsA
• Radiation signalsD to F

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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