Client: Dhaka Water Supply and Sewerage Authority (DWASA) / World Bank

Project consultant: Sweco Danmark A/S

Duration: 2010 – 2013

Dhaka was heavily dependent on groundwater sources for meeting the daily demand of the growing population.  Dhaka Water Supply and Sewerage Authority (DWASA) focused on surface water treatment shifting from an over-exploited ground water aquifer. However, existing surface waters were of poor quality and deteriorating due to domestic and industrial discharges. The treatment of surface waters was therefore an important task to ensure water supply of a sufficient quality and quantity. Existing sewerage systems included both conventional as well as small bore systems which suffered from clogging. Pump stations were operated manually and were not energy efficient.

The objective of the project was to improve the sustainable delivery of wastewater and water services by preparing a master plan for the sewerage and wastewater treatment system for the city of Dhaka (population of 16 million).

The consulting services involved the preparation of a master plan to determine the feasibility of priority investments and undertake the design and preparation of tender documents (World Bank Conditions of Contract) for construction of priority works including construction of new priority works ($52million), and supply and installation of sewerage maintenance equipment (especially sewer cleaning trucks and sociated equipment for $1.4million).