Drought-hit Nairobi looks to filthy dam to keep business flowing

As residents of Nairobi's largest slum look for new sources of water amid lingering drought, they have seized on an unlikely one: An old 88-acre water reservoir full of sewage and trash, draped in water hyacinth. The Nairobi dam has been the capital's spare water reservoir in times of drought since the 1950s, but not a drop of it is usable now, as a result of heavy pollution.