Hillsborough, NH

ZIP 03055

In ZIP 03055, 6 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ashley Commons meets every EPA legal limit; 6 contaminants are above health goals, led by lead at 37× California’s Public Health Goal.
• Nearest Superfund site: Fletcher's Paint Works & Storage, 0.6 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Hitchiner Countergravity Cast Operations (Vco/Dco/Mct) (80%), mostly cobalt.
• Fine particles (PM2.5) average 5.4 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 03055

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

Based on 4 census tracts · compiled September 10, 2026 · how each grade works and its sources

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