Boulder County, CO

ZIP 80481

In ZIP 80481, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Annunciation Heights meets every EPA legal limit; 9 contaminants are above health goals, led by bromodichloromethane at 222× California’s Public Health Goal.
• Nearest Superfund site: Captain Jack Mill, 1.3 miles away.
• Largest share of modeled toxic air from industry: Terumo Bct Sterilization Services Inc (87%), mostly ethylene oxide.
• Fine particles (PM2.5) average 5.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 17,327 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 80481

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

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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