The 02671 zip code area of West Harwich, Massachusetts, currently holds a critical environmental hazard designation due to proximity to active contamination zones. The primary risk source is the Eastham Sanitary Landfill, an active Superfund site located approximately three miles from the community. Another active facility, the Septage Treatment Facility at Old Camp Wellfleet, sits 6.45 miles away, bringing the total number of monitored locations within ten miles to two. Both facilities remain on the active National Priorities List, indicating that the Environmental Protection Agency is currently investigating or executing long-term remediation efforts. The primary pollutants at the Eastham Sanitary Landfill are categorized as unspecified hazardous substances. While the exact chemical makeup remains undisclosed in primary screening data, typical landfill contaminants include volatile organic compounds and heavy metals. Exposure to these waste streams through groundwater migration or airborne particulate dispersion can cause chronic respiratory issues, neurological impairment, and elevated long-term health risks.

Given the potential for subterranean aquifer contamination, residents should immediately verify the source of their domestic tap water and schedule annual laboratory testing for volatile organic compounds if relying on private wells. Additionally, residents should install certified reverse osmosis filtration systems on all primary drinking water taps to intercept migrating groundwater pollutants. Finally, property owners must monitor quarterly Environmental Protection Agency assessment reports regarding the ongoing remediation phases at the Eastham Sanitary Landfill to adjust local mitigation strategies as new subterranean plume data becomes available.