Rockingham County, NH

ZIP 03042

In ZIP 03042, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Unh/Durham Water Sys meets every EPA legal limit; 8 contaminants are above health goals, led by arsenic at 425× California’s Public Health Goal.
• Nearest Superfund site: Dover Municipal Landfill, 4.6 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Pratt & Whitney (74%), mostly cobalt.
• Fine particles (PM2.5) average 5.4 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 03042

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

Based on 2 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…