It looks like it is a big project which needs a major financial commitment. Isn’t it cheaper to utilise surface water?
Not exactly as the rule of thumb in comparing the cost between treating surface water and groundwater is that it costs 5 times more to treat surface water, in other words, the cost for groundwater treatment is a fifth of surface water treatment. At the same time, groundwater is cleaner that surface water due to the inexistence of suspended solids. Another rule is that it costs 1.5-2 times more to establish groundwater wells than direct surface water abstraction sites. When it comes to the construction of dam, groundwater development is a better option because we can do away with environmental and social impacts consequent to the inundation of pristine forests that affect both flora and fauna as well as the displacement of the population. The often quoted groundwater transfer project is the Great Man-Made River Project (GMMR) in Libya. Studies were conducted to establish whether it was more economical to move to the source of water in the desert or to transfer water to existing populati
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