Adams County, CO

ZIP 80640

In ZIP 80640, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: South Adams County Wsd has 1 contaminant at or over an EPA legal limit; 13 contaminants are above health goals, led by arsenic at 385× California’s Public Health Goal.
• Nearest Superfund site: Chemical Sales Co., 3.4 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Terumo Bct Sterilization Services Inc (82%), mostly ethylene oxide.
• Fine particles (PM2.5) average 7.3 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 165,365 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 80640

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

Based on 7 census tracts · compiled October 25, 2026 · how each grade works and its sources

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