Potentially toxic element contamination and risk assessment of borehole water within a landfill in the Nnewi metropolis

Borehole water has been used as a vital source of for many communities. The pollution these boreholes by potentially toxic elements using unlined solid waste dumpsites posed significant risk to the populace living around dumpsite. This study investigates environmental impact on borehole within vicinity an dumpsite in Nnewi metropolis. upstream and downstream samples (16 each) were collected wet dry seasons. analysis wasperformed methods American Public Health Association (APHA) under required conditions. quality was assessed World Organisation (WHO) acceptable limits drinking water. assessment estimated carcinogenic non-carcinogenic risks ingestion dermal routes. results show that wascontaminated with through leachate infiltration, which exceeded WHO permissible at both locations more contaminated than seasons, due their proximity source. hazard indices routes showed poses serious cancer non-cancer health locations. revealed children are susceptible threats adults season (9.028 5.728) (7.107 5.328) respectively, polluted higher season. unsuitable should be treated before use.