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Transboundary Water Supply Schemes  

The Kunene Transboundary Water Supply Project (KTWSP)

Phase I

The Kunene Transboundary Water Supply Project is the pilot project of the Southern Africa Development Community (SADC) under its Regional Strategic Water Development Programme. The project encompasses the development and rehabilitation of water supply and sanitation infrastructure in southern Angola and northern Namibia for communities and towns along the border region between the two countries.

The project is being implemented by the “Task Force Calueque”, a committee of the Permanent Joint Technical Commission (PJTC) on the Kunene basin.

The implementation of this project is supported by the German development cooperation agencies KfW Entwicklungsbank and GIZ (Deutsche Gesellschaft für Internationale Zusammenarbeit GmbH) commissioned by the German Federal Ministry for Economic Cooperation and Development and in delegated cooperation with UKAid from the Department for International Development (DFID) and the Australian Agency for International Development (AusAid).

Angola Namibia Water Project Logo.

The KTWSP has two major components: water abstraction in Angola from Calueque Dam, and the conveyance system in Namibia and Angola. The function of the conveyance system will be to transport sufficient water to the transfer point between Namibia and Angola at the Santa Clara border post opposite Oshikango, thus corresponding to Kunene Province Water Master Plan Phase 1.

The Calueque Dam pump station and intake at the Kunene River in Angola will be upgraded and refurbished, including electrical and mechanical equipment. A water treatment plant and a distribution system will be constructed to supply water to the Angolan village of Calueque.

The current layout of the system with its installed treatment capacities would allow the permanent delivery of a minimum of 74 m³/h of potable water to the Angolan towns of Santa Clara, Namacunde, Omupanda and the Provincial Capital Ondjiva, meeting 15% of future demand with distribution occurring at defined strategic points in each town, including house connections and public taps. The extension of the existing bulk supply system will require upgrading of existing pumping stations at Omakango, Omafo and Oshikango in Namibia and the laying of a new transmission main pipe between the existing reservoir compound at Oshikango and the Namibian / Angolan border.

The 40 km pipeline between Santa Clara and Ondjiva, completed by the Angolan Government in 2005, will be optimized including provision for services in both directions. Electricity supply for the pump station in Santa Clara will also be provided.

Basic Sanitation measures are included for the towns of Santa Clara, Namacunde and Omupuanda. A new sewage network and wastewater treatment plant will be designed and constructed in Ondjiva.

On Namibian side the system will be operated by Namibian Water Cooperation supplying water in bulk to industries, municipalities and the Directorate of Rural Water Supply in the Ministry of Agriculture, Water and Forestry (MAWF), the latter supplying water to rural communities.

On the Angolan side a water utility of Kunene Province (Empresa de Água e Saneamento da Província do Cunene, EASC-EP) will be established to operate and maintain the water supply and wastewater schemes in the province.

This scheme will satisfy the basic requirements of the urban population in the four towns in the short term and is seen as an interim solution until the Xangongo Water Supply and Sanitation Scheme is in place.

Existing scheme to be rehabilitated in Phase 1 of KTWSP
( click to enlarge )
KTWSP Phase 2 layout with Xangongo water supply scheme.
( click to enlarge )

Phase II - The Xangongo Water Supply Scheme

The Xangongo scheme corresponds to Phase 2 of the Water Master Plan of Kunene Province and is financed and implemented by Angolan Government.

In the Xangongo scheme, water will be abstracted from the Kunene River at Xangongo in Angola, 75 km upstream from Calueque, treated and then distributed to various towns and villages including Ondjiva, Namacunde, Santa Clara and Chiede. The scheme includes the construction of a water treatment plant with a total capacity of about 40 000 m³ per day at Xangongo and the construction of a transmission pipe network from Xangongo over Ondjiva to Santa Clara and Chiede. The scheme also foresees the construction of adequate water distribution systems and sewer networks in all towns and villages on the scheme and the construction of affordable wastewater treatment facilities.

For electricity supply a new power line from Ruacana, following the Kunene River course up to Xangongo is planned.

Once completed the Xangongo – Ondjiva transmission link will be an important part of the Calueque – Oshakati – Ondjiva – Xangongo bulk water supply ring, which will secure the long-term supply of water for urban use and rural communities along, and in the vicinity of, the pipeline routes in Namibia and Angola.

Collecting water from a central tank in Namacunde, Angola.
Source: Vogel 2006

This article provides additional information on the KTWSP.




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