Somerville, Massachusetts, within the 02145 zip code, currently holds a critical environmental hazard designation due to extensive industrial contamination. This densely populated urban area is surrounded by high-risk facilities, containing eighteen registered environmental hazard sites within five miles and fifty-five within ten miles. Notably, the active Conway Park site is less than one mile away, while the Coal Tar Processing Facility (Former) sits just 2.2 miles from the area center.

The primary threats in this zone stem from unspecified hazardous substances associated with historic chemical manufacturing and industrial processing. While specific chemical profiles vary by parcel, these industrial byproducts typically include volatile organic compounds and heavy metals that can migrate through soil vapor and groundwater. Prolonged exposure to such compounds can lead to chronic respiratory issues, neurological impairment, and elevated cancer risk. Under the Environmental Protection Agency, the Coal Tar Processing Facility (Former) maintains an active National Priorities List status, indicating that federal evaluation and remediation efforts remain ongoing to mitigate these toxic materials.

Given the high density of active contamination zones, including nearby Monsanto Chemical Co. and General Electric facilities, residents must adopt immediate protective measures. Individuals should install certified volatile organic compound filters on all tap water faucets and avoid consuming untreated water. Homeowners should test indoor air quality for vapor intrusion, particularly in basements. Finally, residents should avoid planting edible gardens directly in native topsoil, opting instead for raised beds filled with imported, certified-clean soil to prevent accidental ingestion of legacy contaminants.