Leominster, Massachusetts, zip code 01453, operates under a critical environmental hazard designation due to profound industrial contamination risks. The area is impacted by an active EPA-regulated Superfund location, specifically the Princeton PFAS Site, situated exactly 2.54 miles away. This zip code exists within a heavily monitored radius containing two hazardous sites within five miles and ten sites within ten miles, including the former Raheb Property Dry Cleaner and Borden Chemical.

The primary contaminants driving this critical status are per- and polyfluoroalkyl substances, commonly known as PFAS or forever chemicals. These synthetic compounds do not break down naturally and accumulate in the human body over time. Prolonged exposure to PFAS through contaminated drinking water or soil is medically linked to severe health complications, including thyroid disease, immune system disruption, decreased fertility, and increased risks of certain cancers.

The Princeton PFAS Site is currently in an active phase on the National Priorities List. This indicates the Environmental Protection Agency has confirmed severe contamination requiring ongoing, federally managed remediation efforts and continuous site investigations to map groundwater migration pathways.

Residents in this zone must implement immediate safety measures to mitigate exposure. Individuals should install certified reverse osmosis or two-stage activated carbon water filtration systems explicitly rated for PFAS removal on all residential taps. Property owners relying on private wells should immediately request independent, EPA-certified laboratory water testing. Furthermore, residents should refrain from utilizing local surface waters for recreation or consuming locally caught fish until federal regulators officially verify regional aquatic environments meet public safety standards.