Carroll County, NH

ZIP 03864

In ZIP 03864, 4 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ossipee Mountains Estates meets every EPA legal limit; 1 contaminant is above health goals, led by lead at 41× 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: Pratt & Whitney (97%), mostly cobalt.
• Fine particles (PM2.5) average 5.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 2,412 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 03864

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

Based on 4 census tracts · compiled October 25, 2026 · how each grade works and its sources

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