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CONSULTANCY SERVICES FOR NRW REDUCTION, HYDRAULIC MODELLING AND GIS DEVELOPMENT (ETHIOPIA)

CONSULTANCY SERVICES FOR NRW REDUCTION, HYDRAULIC MODELLING AND GIS DEVELOPMENT (ETHIOPIA)

The scope of this project is the development of a coherent framework of principles and practices, established in international practice, for achieving the overall goal set by the Client and defined as reducing AAWSA’s overall Non-Revenue Water (NRW) from a current level of about 36% to 40% to a level of 20% by the year 2020. Addis Ababa and its surrounding areas has currently population estimated at about 3.5 million inhabitants. The total pressurized water network length is 3,700 Km.


All aspects of NRW management were addressed in the project. In order to achieve the overall project goal a Strategic Plan was implemented including the following tasks: • Review of Existing Situation. 

  • Organizational Structure Assessment.
  • Bulk Flow Meter Installation and Replacement Proposals
  • Sampling and Testing of Existing Customer Meters
  • Development of Specifications for the Procurement of New Customer Meters and Test Benches.
  • Development of strategic (skeletal) and all-mains hydraulic models.
  • Development of a GIS Management System for the Addis Ababa water supply network
  • Implementation of ten pilot District Metered Areas and active leakage control activities using acoustic techniques.
  • Initial and End Case Water Audits and evaluation of Performance Indicators.
  • Training and Institutional Capacity Building.

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