Hillsborough, NH

ZIP 03045

In ZIP 03045, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Manchester Water Works has 1 contaminant at or over an EPA legal limit; 8 contaminants are above health goals, led by lead at 34× California’s Public Health Goal.
• Closer to Superfund sites than 55% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Pitco Frialator Inc (27%), 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 03045

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

Based on 5 census tracts · compiled September 10, 2026 · how each grade works and its sources

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