Summit County, CO

ZIP 80498

In ZIP 80498, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Silverthorne Town Of meets every EPA legal limit; 11 contaminants are above health goals, led by pfos at 2.6× California’s Public Health Goal.
• Closer to Superfund sites than 54% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Climax Molybdenum Co Henderson Mill (90%), mostly chromium.
• Fine particles (PM2.5) average 4.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 309 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 80498

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

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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