Md Akhtaruzzaman, Additional Chief Engineer and Project Director of Interim Water Supply Project of Dhaka WASA and SM Mahbubur Rahman, Water Resource Planning Director of Institute of Water Modelling (IWM), exchanging a contract signing documents at WASA Bhaban in the city on Monday. Under the deal, IWM will complete a study of water supply network at 16 unions recently added by two city corporations. Engr. Taqsem A Khan, Managing Director of WASA and Dr. Monowar Hossain, Executive Director of IWM among others were present.