Jefferson County, CO

ZIP 80433

In ZIP 80433, 4 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; 11 contaminants are above health goals, led by pfhxs at 2.9× 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 4.4 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 80433

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

Based on 6 census tracts · compiled October 25, 2026 · how each grade works and its sources

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