Plymouth County, MA

ZIP 02341

In ZIP 02341, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Hanover Water Dept has 2 contaminants at or over an EPA legal limit; 10 contaminants are above health goals, led by chloroform at 48× California’s Public Health Goal.
• Nearest Superfund site: South Weymouth Naval Air Station, 7.4 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Depuy Synthes A Johnson & Johnson Co (61%), mostly cobalt.
• Fine particles (PM2.5) average 5.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 10,732 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 02341

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

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

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