Middlesex County, MA

ZIP 01702

In ZIP 01702, 8 of the 12 things we check have at least one part graded D or F.

• Drinking water: Natick Water And Sewer Division has 3 contaminants at or over an EPA legal limit; 16 contaminants are above health goals, led by nitrite at 7.2× https://pmc.ncbi.nlm.nih.gov/articles/PMC4535738/.
• Nearest Superfund site: Nyanza Chemical Waste Dump, 2.3 miles away (3 within 10 miles).
• Largest share of modeled toxic air from industry: Isomedix Operations Inc. (31%), mostly ethylene oxide.
• Fine particles (PM2.5) average 6.9 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 01702

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

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

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