Middlesex County, MA

ZIP 01464

In ZIP 01464, 3 of the 12 things we check have at least one part graded D or F.

• Drinking water: Ayer Dpw Water Division has 3 contaminants at or over an EPA legal limit; 11 contaminants are above health goals, led by arsenic at 4,996× California’s Public Health Goal.
• Nearest Superfund site: Fort Devens, 4.4 miles away.
• Largest share of modeled toxic air from industry: Tecomet (26%), mostly cobalt.
• Fine particles (PM2.5) average 6.1 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 01464

• Superfund sites nearbyF
• Factories and industrial sitesB
• 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 signalsF

Based on 1 census tract · compiled October 25, 2026 · how each grade works and its sources

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