TAHAL is developing its business arena to include assets ownership through new acquisitions and investments in build-operate-transfer (BOT), transfer-operate-transfer (TOT) and build-own-operate (BOO) projects throughout the world. Operations in the area of assets and investments, carried out through TAHAL Group Assets B.V. and its subsidiaries, include municipal water systems, desalination facilities, wastewater treatment plants (WWTPs), solid waste management and environmental infrastructure development.
 
Principal holdings include the following:
 
Akfen Çevre ve Su Yatırım Yapım İşletme A.Ş. (Akfen Su Water) is a joint company engaged in management and operation of water & wastewater corporations, and meeting the challenges of waste management issues in Turkey. Akfen Su Water was the first company to enter into a WWTP BOT project in Turkey, and currently has concession agreements with municipalities for the management and operation of water and wastewater networks, as well as BOT agreements with organized industrial zones (OIZs) for water and wastewater treatment plants. These long-term agreements include the design, construction, upgrading and operation of water and wastewater networks and treatment plants. Akfen Su Water is also carrying out solid waste management projects in which solid waste from several Marmara seaports of Istanbul Fast Ferries Co. (IDO) is collected and handled in accordance with regulations. Akfen Su Water is currently pursuing additional concessions and BOT agreements throughout Turkey and other countries in the region.

 
Kardan Water Ltd (KW) is the operational platform of TAHAL Group Assets B.V. in the Chinese market. Established in 2007, KW began its operations with a focus on two main geographical areas – the Bohai coastal area in Shandong, Tianjin and Hebei provinces, and the west Yangtze River area in Sichuan Province. KW develops, operates and invests in water-related projects in China, focusing on infrastructure development, water and wastewater treatment, water recycling and sludge disposal. KW has added value to existing wastewater treatment plants by upgrading them to the highest standards. As rapid growth and urbanization in Tier II and Tier III cities highlight the need for further infrastructure development, KW has been expanding its existing capacity of 655,000 m3/day, with 11 water projects in four provinces in China.
 
TAHAL India Pvt. Ltd., a wholly owned subsidiary of TAHAL Group Assets B.V., was established to initiate investment projects in the fields of water and wastewater. The company, headquartered in Mumbai, is targeting promising cities in India for development of their municipal assets. In association with a prestigious local partner, the company has been awarded a design-build-operate (DBO) project in Delhi, aiming to upgrade the distribution infrastructure of several key regions, as well as assuming full responsibility for the operation and maintenance of the local municipal systems in these areas for a 10‑year period. TAHAL India sees tremendous potential in the Indian water infrastructure market, especially in the field of wastewater, and is determined to develop a strong portfolio of WWTPs across major parts of the country on a BOT/public–private partnership (PPP) basis.