Plymouth County, MA

ZIP 02370

In ZIP 02370, 4 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, 1.4 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Depuy Synthes A Johnson & Johnson Co (40%), mostly cobalt.
• Fine particles (PM2.5) average 6.0 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 02370

• Superfund sites nearbyD to F
• Factories and industrial sitesD
• Oil and gas wellsB
• Parks and nature nearbyB
• Air qualityA
• Drinking water qualityC to F
• Pesticide useB to C
• Neighborhood health statusB to C
• Past wildfire impactsA
• Past flood impactsD
• Noise levelsA
• Radiation signalsB to C

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

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