Natrona County, WY

ZIP 82630

In ZIP 82630, 1 of the 12 things we check have at least one part graded D or F.

• Drinking water: Casper, City Of meets every EPA legal limit; 4 contaminants are above health goals, led by lithium at 3.9× the USGS health-based screening level.
• 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 20,547 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 82630

• Superfund sites nearbyA
• Factories and industrial sitesA
• Oil and gas wellsB
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityA to C
• Pesticide useC
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA
• Radiation signalsF

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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