Coos County, NH

ZIP 03583

In ZIP 03583, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Rosebrook Water meets every EPA legal limit; 7 contaminants are above health goals, led by bromodichloromethane at 33× California’s Public Health Goal.
• Closer to Superfund sites than 54% of U.S. neighborhoods, with no listed site within 10 miles of its center.
• Largest share of modeled toxic air from industry: Gorham Sand & Gravel Pike Industries Inc (80%), mostly polycyclic aromatic compounds.
• Fine particles (PM2.5) average 5.4 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 3,685 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 03583

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

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

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