Cheshire County, NH

ZIP 03446

In ZIP 03446, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: West Swanzey Water meets every EPA legal limit; 2 contaminants are above health goals, led by lead at 18× California’s Public Health Goal.
• Nearest Superfund site: Troy Mills Landfill, 4.2 miles away.
• Largest share of modeled toxic air from industry: Bete Fog Nozzle Inc. (95%), mostly chromium.
• Fine particles (PM2.5) average 6.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 6,756 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 03446

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

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

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