WMI - Water Management International
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ESTABLISHMENT OF A BASELINE AND PREPARATION OF TECHNICAL SPECIFICATIONS FOR THE IMPLEMENTATION OF A PERFORMANCE BASED CONTRACT FOR THE REDUCTION OF NON REVENUE WATER IN DAR-ES-SALAAM
Tanzania
ESTABLISHMENT OF A BASELINE AND PREPARATION OF TECHNICAL SPECIFICATIONS FOR THE IMPLEMENTATION OF A PERFORMANCE BASED CONTRACT FOR THE REDUCTION OF NON REVENUE WATER IN DAR-ES-SALAAM
Integrated Assessment of Non Revenue Water of the drinking water supply system of Dar es Salaam and preparation of an action plan to reduce Non Revenue Water from 60% to 45%.

The study includes:
• Study of the distribution network, evaluation and reduction of Non Revenue Water in 10 pilot areas (120 km of network),
• Preparation of a water balance (method IWA) and development of an overall strategy to reduce Non Revenue for DAWASA / DAWASCO (respectively Water Authority and the network operator),
• Preparation of the terms of reference and the tender documents for a Performance Based Contract.

Description of WMI services


  • Supply of leak detection equipment, flow / pressure measurements, data loggers, meters and test bench (DN 15 - DN 50),
  • Sectorization and "Step Testing" in 10 pilot areas (120 km),
  • Flow / pressure measurements,
  • Leak repairs and rehabilitation of the network,
  • Evaluation of the accuracy of the metering and the consumption patterns,
  • Testing of 400 meters on test bench,
  • Control pressure program,
  • IWA water balance on the all Dar es Salaam network,
  • Preparation of action plan for the reduction of Non Revenue Water,
  • Preparation of specifications for a performance based contract.

Key results


  • NRW assessment at a citywide scale,
  • Detailed 3-year NRW plan established,
  • Etablishment of specifications for a performance based contract.



IDENTITY CARD

   Location
 
Tanzania
   Date of award
 
07.2010
  Date of completion
 
11.2011
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