Review of the studies of the water project III in Addis Ababa (Ethiopia)

Client : Addis Ababa Water Supply Authority
Partners : World Bank 
Realisation : 2013-2015

SCE missions :

SCE intervened on 3 components :
Water Treatment

  • Audit of existing water treatment plants (Legadai – 150 000 m3/day and Gefarsa – 30 000 m3/day) and recommendations for improvement
  • Reviewing considered treatment options depending on available resources for future situation
  • Updating recommendations of treatment for the chosen option
  • Characterization of the pressures and vulnerability of the watersheds, and of the restraints and potential of possible drinking

Water Treatment

  • Audit of existing water treatment plants (Legadai – 150 000 m3/day and Gefarsa – 30 000 m3/day) and recommendations for improvement
  • Reviewing considered treatment options depending on available resources for future situation
  • Updating recommendations of treatment for the chosen option

Water Management

  • Characterization of the pressures and vulnerability of the watersheds, and of the restraints and potential of possible drinking water production
  • Recommendations of different protection or compensation measures

Preparation and installation of a resources and infrastructure database

  • Analysis of needs, detailed specification of the database
  • Computer development of a consultation tool and update of the database
  • Installment within the facilities of AAWSA and training.

 

In Addis Ababa the water is currently supplied by ground and surface water sources. However these resources are insufficient to cover the need for water, which is in permanent increase and the water authorities have commissioned numerous drillings in order to meet short term demands. The construction of new dams is necessary since the long-term demand is based upon the exploitation of surface water (Water Project III).

All studies of the Water Project III, carried out between 1984 and 2006 have been completed, but the project has since been stopped due to lack of funding.

The objectives of these services are to update the water demand projection, to study it and compare the different scenarios of water resource development and treatment that could potentially supply Addis Ababa, and carry out environmental impact studies and social studies, and prepare the reference terms for the completion of the recommended option.
SCE was assigned as a subcontractor to the engineering consultancy firm of Nicholas O’Dwyer.

 

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