Jefferson County, CO

ZIP 80127

In ZIP 80127, 5 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; 12 contaminants are above health goals, led by pfhxs at 3.4× California Notification Level.
• Nearest Superfund site: Air Force Plant Pjks, 3.0 miles away.
• Largest share of modeled toxic air from industry: Terumo Bct Sterilization Services Inc (93%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.8 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 80127

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

Based on 15 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…