Hillsborough, NH

ZIP 03449

In ZIP 03449, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Contoocook River Cooperative meets every EPA legal limit; 8 contaminants are above health goals, led by lead at 51× California’s Public Health Goal.
• Nearest Superfund site: South Municipal Water Supply Well, 8.6 miles away.
• Largest share of modeled toxic air from industry: Pitco Frialator Inc (40%), mostly chromium.
• Fine particles (PM2.5) average 5.5 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 24,072 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 03449

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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