Developmentof a Non-Revenue Water (NRW) Plan for Huambo Province water supply systems,including the development of hydraulic models and the definition and design of District Metered Areas (DMA) and Pressure Zones (PZ). The plan aims at reducing Technical and Commercial Water Losses and improving the Hydraulic Efficiency of the Networks within the scope of the Contract for Management, Operations and Maintenance services for Huambo Province water supply systems.