Tackle threat of Nairobi City running out of water soon

Residents of Cape Town in South Africa are braving themselves for the worst of times. They are steeling themselves to beat "Day Zero", when reservoirs will all run dry and taps will be shut off in the city's homes, forcing its affluent residents to queue for water in several water points. The acute shortage is blamed on a three-year drought that has ravaged the region.

It is not surprising that up North, Nairobi is faced with severe water shortages. Yet it is the parallel in efforts employed by the two authorities to address the challenge -and the causes-that are a matter of interest.