Clear Creek County, CO

ZIP 80439

In ZIP 80439, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Mountain Wsd has 2 contaminants at or over an EPA legal limit; 11 contaminants are above health goals, led by pfhxs at 2.9× California Notification Level.
• Closer to Superfund sites than 98% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Terumo Bct Sterilization Services Inc (93%), mostly ethylene oxide.
• Fine particles (PM2.5) average 4.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1,017 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 80439

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

Based on 11 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…