Rehabilitation of the water supply system of the city of Mocuba in Mozambique

The county seat Mocuba is located in the Mozambican province of Zambezi and has around 120,000 inhabitants. Central parts of the city's water supply system were destroyed by a flood in 2015. The water extraction tower on the Rio Lugela was badly damaged and the raw water pipeline was torn away. After the flood, the river took a new course, so that a secure water abstraction was no longer possible. In addition, the city's supply network was very dilapidated with an estimated leakage rate of over 80%.

Therefore, GAUFF Engineering was commissioned by the World Bank together with the AIAS (Administracao de Infraestuturas de Água e Saneamento – Society for Urban Wastewater and Water Supply in Mozambique) to extensively rehabilitate the water supply system of the city of Mocuba. The overall project was divided into two phases.

In phase 1, the so-called emergency phase, an abstraction structure including the electrical supply and the supply lines to the existing waterworks as well as a new supply network with a length of around 27 km are planned. Construction started in July 2019. After completion, the system now has a delivery capacity of around 5,700 m3 / day. In addition, two groynes are planned to stabilise the riverbed in the area of the new raw water extraction.

In phase 2, the water supply system for the city of Mocuba is planned, which should be designed to supply around 200,000 customers which are forecasted for the year 2040. For this, a second river water abstraction at the Rio Licungo with drinking water treatment plant, pumping stations, storage facilities and the expansion of the supply network by a total of 192 km is currently being planned. The output of this system will be approximately 20,000 m3 / day.

In phase 1, GAUFF Engineering is responsible for planning, tender documents and site management. In phase 2 we are currently working on the design and execution planning as well as the preparation of the tender documents.

The completion of phase 1 construction is currently planned for September 2020.

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