Addison County, VT

ZIP 05778

In ZIP 05778, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Tri Town Water District meets every EPA legal limit; 7 contaminants are above health goals, led by chloroform at 121× California’s Public Health Goal.
• Closer to Superfund sites than 0% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Sterigenics US Llc-Queensbury Ny Facility (51%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.1 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 73,012 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 05778

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

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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