Residents of Zimbabwe's capital, Harare, have been forced to use river water because of ongoing breaks in the purified water supply, raising concern over possible outbreaks of waterborne diseases. Like many other urban residents, it's a daily routine for 12-year-old Stella Chiyangwa to walk six kilometres to a river to fetch water for household use - she now lives a life not much different from that of her counterparts in remote rural areas.