Douglas County, CO

ZIP 80109

In ZIP 80109, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Sedalia Wsd meets every EPA legal limit; 9 contaminants are above health goals, led by arsenic at 260× California’s Public Health Goal.
• Nearest Superfund site: Air Force Plant Pjks, 9.5 miles away.
• Largest share of modeled toxic air from industry: Terumo Bct Sterilization Services Inc (92%), mostly ethylene oxide.
• Fine particles (PM2.5) average 5.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 4,590 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 80109

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

Based on 6 census tracts · compiled September 10, 2026 · how each grade works and its sources

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