Middlesex County, MA

ZIP 01826

In ZIP 01826, 5 of the 12 things we check have at least one part graded D or F.

• Drinking water: Salem Water Dept has 3 contaminants at or over an EPA legal limit; 13 contaminants are above health goals, led by lead at 61× California’s Public Health Goal.
• Nearest Superfund site: Silresim Chemical Corp., 3.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Tecomet (26%), mostly chromium.
• Fine particles (PM2.5) average 6.8 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 34,462 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 01826

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

Based on 7 census tracts · compiled September 10, 2026 · how each grade works and its sources

Loading the full report, with every source…