Rockingham County, NH

ZIP 03854

In ZIP 03854, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Portsmouth Water Works meets every EPA legal limit; 10 contaminants are above health goals, led by pfos at 2.4× California’s Public Health Goal.
• Nearest Superfund site: Portsmouth Naval Shipyard, 1.4 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Pratt & Whitney (67%), mostly cobalt.
• Fine particles (PM2.5) average 5.0 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 18,148 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 03854

• Superfund sites nearbyF
• Factories and industrial sitesB
• Oil and gas wellsA
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityC to D
• Pesticide useB
• Neighborhood health statusB
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA
• Radiation signalsB

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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