Nachhaltige Wasserversorgung und Lebensunterhalt Sustainable Water Sources and Livelihoods among Rural Communities of Northern Bahr el Ghazal Nachhaltige Wasserversorgung und Lebensunterhalt Sustainable Water Sources and Livelihoods among Rural Communities of Northern Bahr el Ghazal Nachhaltige Wasserversorgung und Lebensunterhalt Sustainable Water Sources and Livelihoods among Rural Communities of Northern Bahr el Ghazal