Hillsborough, NH

ZIP 03049

In ZIP 03049, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pennichuck Water Works meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 132× California’s Public Health Goal.
• Nearest Superfund site: Sylvester, 4.0 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Proto Labs Inc (36%), mostly chromium.
• Fine particles (PM2.5) average 5.6 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 03049

• Superfund sites nearbyF
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyC
• Air qualityA
• Drinking water qualityB to F
• Pesticide useC
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsF

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

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