The Lenox, Massachusetts area, encompassing ZIP code 01240, carries a critical environmental hazard designation due to significant industrial legacy pollution. The region contains seven active hazard sites within a five-mile radius, heavily impacted by the Berkshire Tanning Co (Former) facility and the nearby GE Housatonic River site.

While the specific hazardous substances at the Berkshire Tanning Co (Former) are officially categorized as unspecified, historical tannery and industrial operations typically leave persistent soil and groundwater contaminants, including heavy metals and volatile organic compounds. Exposure to these industrial byproducts can affect residents through direct soil contact, vapor intrusion into basements, or ingestion of compromised well water, potentially leading to long-term respiratory, neurological, and developmental health issues. The Environmental Protection Agency currently classifies the Berkshire Tanning Co (Former) and surrounding locations as active sites on the National Priorities List. This active regulatory status indicates that the sites are undergoing ongoing remedial investigations, risk assessments, or active engineered cleanups, meaning the environmental threat has not yet been fully contained or mitigated by federal authorities.

Given the active status of nine total sites within ten miles, residents must implement immediate environmental safety protocols. Individuals utilizing private wells must schedule comprehensive annual water testing specifically targeting heavy metals and volatile organic compounds through a state-certified laboratory. Residents engaging in residential agriculture or landscaping should utilize raised beds with imported, certified clean topsoil rather than planting directly into native ground. Finally, homeowners should install basement vapor barriers and active ventilation systems to prevent potential chemical vapor intrusion from underlying groundwater plumes.