Hillsborough, NH

ZIP 03104

In ZIP 03104, 7 of the 12 things we check have at least one part graded D or F.

• Drinking water: Pembroke Water Works has 2 contaminants at or over an EPA legal limit; 6 contaminants are above health goals, led by pfos at 6.5× California’s Public Health Goal.
• Nearest Superfund site: Auburn Road Landfill, 4.2 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Pitco Frialator Inc (49%), mostly chromium.
• Fine particles (PM2.5) average 6.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 12,119 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 03104

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

Based on 17 census tracts · compiled September 10, 2026 · how each grade works and its sources

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