Norfolk County, MA

ZIP 02446

In ZIP 02446, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Brookline Water And Sewer Division meets every EPA legal limit; 3 contaminants are above health goals, led by bromodichloromethane at 65× California’s Public Health Goal.
• Nearest Superfund site: Materials Technology Laboratory (usarmy), 3.2 miles away (2 within 10 miles).
• Largest share of modeled toxic air from industry: Tecomet (32%), mostly cobalt.
• Fine particles (PM2.5) average 6.9 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 1 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 02446

• Superfund sites nearbyA to D
• Factories and industrial sitesF
• Oil and gas wellsB
• Parks and nature nearbyC
• Air qualityB
• Drinking water qualityA to C
• Pesticide useA
• Neighborhood health statusA
• Past wildfire impactsA
• Past flood impactsC
• Noise levelsA to D
• Radiation signalsB

Based on 11 census tracts · compiled October 25, 2026 · how each grade works and its sources

Loading the full report, with every source…