Merrimack County, NH

ZIP 03106

In ZIP 03106, 3 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; 6 contaminants are above health goals, led by pfoa at 643× California’s Public Health Goal.
• Nearest Superfund site: Auburn Road Landfill, 9.6 miles away.
• Largest share of modeled toxic air from industry: Pitco Frialator Inc (49%), mostly chromium.
• Fine particles (PM2.5) average 5.3 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 03106

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

Based on 3 census tracts · compiled October 25, 2026 · how each grade works and its sources

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