“…This suggests that the greatest challenge is to provide more waste disposal facilities such as landfill to treat the waste (Hassan et al, 2001). Despite the complexity of waste produced, the standards of landfills in most developing countries are still poor; these include inadequate waste treatment facilities, inefficient collection and storage systems, co-disposal of municipal waste with hazardous waste, inefficient utilisation of disposal space, lack of environmental abatement measures and poor documentation (Hassan et al, 2000). As a consequence, a great deal of contamination, especially to surface water, soil and ground water, occurs, threatening the health of exposed populations and ecosystems (Zhang et al, 2010).…”