Fremont County, CO

ZIP 81226

In ZIP 81226, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Williamsburg Town Of meets every EPA legal limit; 6 contaminants are above health goals, led by bromodichloromethane at 141× California’s Public Health Goal.
• Nearest Superfund site: Lincoln Park, 1.7 miles away.
• Largest share of modeled toxic air from industry: Holcim (US) Inc Portland Plant (75%), mostly formaldehyde.
• Fine particles (PM2.5) average 4.6 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 7,622 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 81226

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

Based on 5 census tracts · compiled October 25, 2026 · how each grade works and its sources

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