Jefferson County, CO

ZIP 80419

In ZIP 80419, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Golden City Of has 1 contaminant at or over an EPA legal limit; 11 contaminants are above health goals, led by nitrite at 10× https://pmc.ncbi.nlm.nih.gov/articles/PMC4535738/.
• Closer to Superfund sites than 85% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Terumo Bct Sterilization Services Inc (93%), mostly ethylene oxide.
• Fine particles (PM2.5) average 5.9 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 80419

• Superfund sites nearbyF
• Factories and industrial sitesD
• Oil and gas wellsA
• Parks and nature nearbyD
• Air qualityA
• Drinking water qualityD
• Pesticide useA
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsA
• Noise levelsC to D
• Radiation signalsD

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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