The 03878 zip code area of Somersworth, New Hampshire, carries a critical environmental hazard designation due to close proximity to multiple hazardous waste facilities. The Dover Municipal Landfill, located exactly 1.2 miles from this community, is currently an active site on the EPA National Priorities List. Regulatory intervention remains in the active cleanup and mitigation stage, meaning groundwater and soil remediation efforts are ongoing but environmental containment is not yet absolute. The surrounding geographical region contains two active Superfund locations within five miles, including the Somersworth Sanitary Landfill, and four distinct hazardous sites within ten miles.

The primary pollutants associated with these local facilities are unspecified hazardous substances, a broad classification often denoting legacy landfill leachate containing volatile organic compounds, heavy metals, and industrial solvents. Chronic environmental exposure to these compounds via vapor intrusion or contaminated groundwater can cause severe neurological damage, respiratory distress, and an elevated risk of specific cancers among exposed local populations.

Residents must implement immediate safety protocols to minimize potential environmental exposure pathways throughout their homes. Households relying on private groundwater wells should schedule comprehensive annual water testing for volatile organic compounds and heavy metals through a state-certified laboratory. Individuals residing within a two-mile radius of the Dover Municipal Landfill should install EPA-approved reverse osmosis water filtration systems for all drinking and cooking sources. Furthermore, residential property owners should seal foundation cracks and evaluate the necessity of installing sub-slab depressurization systems to prevent potentially toxic soil vapor intrusion into residential basements and ground-floor living spaces immediately.