This thesis considers prospects for wastewater management between Israel and Palestine in regions which are in close proximity to one another. This work uses the Tulkarem / Emek Hefer region to examine attitudes and preferences of wastewater managers towards cooperation in the management of wastewater. I conducted interviews with wastewater managers in the region and analyzed the interviews using a thematic approach. I also did key informant interviews with Israeli and Palestinian policy makers involved in water, wastewater and in some cases also cooperation. I also assessed the attitudes and preferences of the policy makers towards a series of scenarios for transboundary cooperation. Interviewees' nuanced perspectives on wastewater management policy after an independent Palestinian state is established proved the scenarios presented in chapter four short coming. I conclude by addressing the six themes; why cooperation? the role of national institutions, classification of cooperation, between national and local, communication and finally obstacles for cooperation. Each of these themes includes policy guidelines.