Andover, New Hampshire, falls under a high environmental hazard designation due to proximate industrial contamination. The primary ecological and health concern stems from the Old Pillsbury Mill, an active EPA Superfund site located 4.5 miles from the local zip code center. As an active site on the National Priorities List, this location is currently undergoing federal investigation and remediation efforts to mitigate long-standing environmental threats.

The Environmental Protection Agency classifies the primary contaminants at this facility as unspecified hazardous substances. While the exact chemical composition remains under ongoing regulatory evaluation, exposure to legacy industrial byproducts generally occurs through groundwater migration, soil disruption, or airborne particulate matter. Long-term exposure to broad-spectrum industrial hazardous substances can lead to respiratory distress, neurological impairment, and elevated risks of chronic systemic illnesses. Because local aquifers can intersect with subterranean contamination plumes, private water sources are particularly vulnerable.

Residents in the Andover area should take immediate precautionary measures to minimize potential exposure risks. Homeowners utilizing private drinking wells must test their water supply annually for volatile organic compounds and heavy metals through a state-certified laboratory. Individuals residing within a five-mile radius of the Old Pillsbury Mill should install high-efficiency particulate air filtration systems in their homes to capture potentially contaminated airborne soil dust. Furthermore, residents must consult the local health department before cultivating consumable gardens, utilizing raised beds with imported, certified-clean soil to prevent accidental ingestion of accumulated ground contaminants. These localized environmental conditions require continuous monitoring protocols to better ensure ongoing public health and safety.