Essex County, MA

ZIP 01921

In ZIP 01921, 2 of the 12 things we check have at least one part graded D or F.

• Drinking water: Topsfield Water Department has 1 contaminant at or over an EPA legal limit; 15 contaminants are above health goals, led by arsenic at 288× California’s Public Health Goal.
• Nearest Superfund site: Groveland Wells, 3.1 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Union Specialties Inc (40%), mostly hydrazine.
• Fine particles (PM2.5) average 5.7 µg/m³; the WHO guideline is 5 and the EPA annual standard is 9.
• About 21,474 kg of agricultural pesticides are applied in the county each year.

Grades for ZIP 01921

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

Based on 2 census tracts · compiled September 10, 2026 · how each grade works and its sources

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