Boulder County, CO

ZIP 80466

In ZIP 80466, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Meadow Mtn Water Supply meets every EPA legal limit; 4 contaminants are above health goals, led by chloroform at 83× California’s Public Health Goal.
• Nearest Superfund site: Captain Jack Mill, 7.0 miles away.
• Largest share of modeled toxic air from industry: Terumo Bct Sterilization Services Inc (91%), mostly ethylene oxide.
• Fine particles (PM2.5) average 5.1 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 80466

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

Based on 3 census tracts · compiled September 10, 2026 · how each grade works and its sources

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