The zip code 01746 in Holliston, Massachusetts, currently holds a critical environmental hazard designation. This specific geographic area sits within a dense cluster of severe industrial contamination, featuring ten active hazard locations within a five-mile radius and twenty-one within ten miles.

The most prominent local threat stems from the Agway/Kress Property, an active site on the Environmental Protection Agency’s National Priorities List. The EPA currently classifies this hazardous location under active remediation status, meaning comprehensive cleanup operations and long-term environmental monitoring remain ongoing but fundamentally incomplete.

Environmental assessments of this facility identify unspecified hazardous substances as the primary pollutants. While specific chemical profiles vary, exposure to industrial hazardous waste mixtures frequently affects local populations through groundwater permeation and vapor intrusion. Prolonged exposure to such compounds risks compromising endocrine, respiratory, and neurological functions in residents, particularly among vulnerable demographics relying on local well water. Compounding these risks, nearby active sites including the Shaffer Landfill and Watertown Bemis Dump sit fractions of a mile from municipal boundaries, increasing the cumulative contamination load.

Given the active status of these National Priorities List sites, residents must implement immediate protective household safeguards. Individuals relying on private wells must commission independent, EPA-certified water testing specifically screening for volatile organic compounds and toxic heavy metals. Residents should install point-of-entry reverse osmosis water filtration systems to intercept potential groundwater pollutants before domestic use. Finally, households with below-grade basements must seal foundation cracks and install active sub-slab depressurization systems to prevent industrial vapor intrusion from migrating into living spaces.