Water is a natural resource of fundamental importance. It is a common factor to the five basic human needs namely air, water, food, light and heat (Peter & Reed, 2004). Water constitutes about 80% of animal cells (Mwendera, 2006). The human body by weight consists of about 70% water and several body functions depend on water (Human Development Report, 2006). It is therefore, not an understatement to say water is life because it forms an appreciable proportion of all living things including man.However, the supply of domestic water has remained the global single most important environmental and economic problem affecting mankind (Mwendera, 2006; Ntengwe, 2005).Although, the magnitude of the scarcities varies greatly over space and time and depends on the sensitivity and resilient nature of the water resources as well as water management policies and practices in use. The severity of the inadequacy is particularly more severe in the rural regions of the Sub-Saharan African countries where its demand has fast outpaced its availability for consumption (Yunanaet al., 2016). Inadequate water supply, constant hunger; severe thirst and tension, conflicts among users, low quality of life, and excessive pressure on the environment constraining the region are the consequent of the pressure on water resources (Ajayiet al., 2003; Udo & Etim, 2007). In Nigeria, where the level of poverty is high and population increases is among the highest in the world with more than two-third of its populace living in the rural areas call for increase allocation of groundwater and surface water for domestic, agricultural and industrial sector uses(UN report 2016). Conversely, Nigerian water availability per capital is decreasing and ranked as least in the world with 3,800M3/capital per year a little more than half the world average of 7000M3(Peter & Reed, 2004; Yunanaet al., 2016). It was projected that; if the present trend of decrease in domestic water availability (31.5%)continues unabated, its availability per capital by 2025 maybe 65% less than the world average 7000M3while, over 40 million people living in rural areas will face absolute water scarcity and two-thirds of the rural lands comes under stress condition (
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