Chittenden County, VT

ZIP 05495

In ZIP 05495, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Williston Fire District 1 has 1 contaminant at or over an EPA legal limit; 10 contaminants are above health goals, led by pfos at 4× California’s Public Health Goal.
• Nearest Superfund site: Commerce Street Plume, 2.6 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Globalfoundries U.S. 2 LLC - Vermont Facility (70%), mostly sulfuric acid.
• Fine particles (PM2.5) average 5.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 13,551 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 05495

• Superfund sites nearbyC to F
• Factories and industrial sitesA to B
• Oil and gas wellsA
• Parks and nature nearbyB to D
• Air qualityA
• Drinking water qualityC to F
• Pesticide useD
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsC to D

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

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