In 2011, ONEAD (Djibouti’s national water and sewerage authority) awarded a contract to VINCI Construction Grands Projets to rehabilitate and expand the drinking-water supply network in Djibouti. The project consisted in rehabilitating 36 wells, carrying out network segmentation by district, repairing leaks in defective equipment, installing 100 kilometres of HDPE pipes, and providing 2,000 connections. Following this initial phase and the client’s satisfaction, we were hired once again in 2015:
For the second phase which consisted of rehabilitating the drinking-water network and expanding it by 36 kilometres, building a semi-underground storage tank, and providing no fewer than 3,000 connections. This phase was designed to improve access to water in working-class neighbourhoods and newly developed urban areas.
For another contract for a project that was complementary to the second phase of the initial project; it consisted in expanding the main water-supply network by 25 kilometres, upgrading three water towers, implementing a telemetry system for the drinking-water segment of the network, and – on the sanitation side – rehabilitating 3 STEP and the open-air drainage channel.

Yemen’s National Water and Sanitation Authority mandated us to build a wastewater treatment plant with a capacity of 50,000 m³/day in the capital city of Sana’a. The project, located north of the capital city next to El Rahaba International Airport, included construction of an underground intake wastewater pipeline made of fibreglass that is 6 kilometres long and ranges in diameter from 1,200 to 1,500 millimetres, civil engineering for the filtration plant, construction of a 200,000-m³ storage pond for wastewater designed for irrigation purposes, and implementation of about 3 kilometres of cast-iron or fibreglass pipes ranging in diameter from 80 to 1,500 millimetres. The treatment plant includes a workshop, a back-up power station (4 MW), and an administrative building.