More than half the residents of Nairobi live in informal settlements and slums. Their housing is inadequate and they have little access to clean water, health care and other essential public services. Violence against women is widespread where ineffective policing results in rape and other violence against women going largely unpunished. This report examines the experiences of women living in four slums in Nairobi. It calls on the Kenyan government to address gender-based violence against women and to ensure women’s access to sanitation and public security services.