en.Wedoany.com Reported - The Al Haer Independent Sewage Treatment Plant project in Riyadh, the capital of Saudi Arabia, is progressing and is expected to commence commercial operations in the fourth quarter of 2026. With a total investment of 1.8 billion Saudi Riyals, the project adopts the "Build-Own-Operate-Transfer" (BOOT) model and has a 25-year concession period. Upon completion, it will have a daily sewage treatment capacity of 200,000 cubic meters, supported by a 32-kilometer sewage conveyance pipeline network and a pump station and storage tank system.
The project is being developed by a consortium led by Belgium's Besix Group, in partnership with Saudi local companies Miahona and Marafiq. According to the equity structure, Miahona, as the lead party, holds a 45% stake in the project company, Marafiq holds 35%, and Besix holds the remaining shares. The project achieved financial close in February 2025. For the engineering, procurement, and construction (EPC) contract, a consortium of India's VA Tech Wabag and Saudi Arabia's Mutlaq Al-Ghowairi Contracting Company secured a $371 million contract. Wabag, as the technical partner, is responsible for the design and construction of the sewage treatment plant, while MGC is responsible for the construction of the conveyance pipelines and storage tanks.
The treatment process employs technologies such as biological nutrient removal (nitrogen and phosphorus), membrane filtration, and ultraviolet disinfection. The effluent quality meets Saudi Arabia's highest standards for water reuse. The treated reclaimed water will be used for urban greening, industrial cooling, and groundwater recharge. The concurrently constructed reclaimed water conveyance system has a designed capacity of 400,000 cubic meters per day, supported by reclaimed water pumping stations and a 200,000 cubic meter storage tank.
The Al Haer Independent Sewage Treatment Plant is one of the projects under the third batch of the Independent Sewage Treatment Plant (ISTP) program promoted by Saudi Water Partnership Company. It serves the water resource sustainability management goals of Saudi Arabia's "Vision 2030." Upon completion, the project will produce over 70 million cubic meters of reclaimed water annually, contributing to reducing reliance on seawater desalination.
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