Summit County, CO

ZIP 80435

In ZIP 80435, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Snake River Wd has 1 contaminant at or over an EPA legal limit; 12 contaminants are above health goals, led by pfoa at 414× California’s Public Health Goal.
• Closer to Superfund sites than 66% 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 (94%), mostly chromium.
• Fine particles (PM2.5) average 4.0 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 80435

• Superfund sites nearbyC to D
• Factories and industrial sitesA
• Oil and gas wellsA
• Parks and nature nearbyA
• Air qualityA
• Drinking water qualityB to F
• Pesticide useB
• Neighborhood health statusA to B
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsA to C
• Radiation signalsF

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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