Corporate Focus: Dhaka WASA signs a contract with Consultants Mott Macdonald Ltd, UK and Associates on Wednesday at a hotel in the city. The contract aims for Management Design Supervision Consultant (MDSC) of Gandharbpur Water Treatment Plant. Dhaka WASA Managing Director Engr. Taqsem A Khan and Mott Macdonald Ltd Country Director Ben Witjes sign the contract on behalf of their respective organisations.