To meet demand for potable water in Delhi, India, where the population is
projected to grow from 16 million to 25 million, Delhi Jal Board is reforming
the water supply system with capital improvements, expansion into peripheral
areas, reduction of water losses and nonrevenue water, and eventual extension
of service to 24/7.
A network model was created based on GIS data for the transmission and
distribution system and hydraulic information from regional offices. Demands
were calculated based on population projections and land use. WaterGEMS
assigned water demands and identified bottlenecks, analysis that yielded
proposals for laying pipeline, modifying pumping capacities and command zone
boundaries, and other improvements.
Design and Management Consultants Ltd of Dhaka Water Supply and Sewerage Authority
Water Supply Sector Development Project
The $200 million Dhaka water supply project involves physical rehabilitation
and strengthening of the water supply distribution network by introducing
hydraulically self-contained district metering areas to minimize losses and
enable 24-hour pressurized water supply. Using a GIS-based MIS system, a
model was developed for the existing network.
The design for meeting demand covers three scenarios for sourcing water: only
tube well, only surface water, and both tube well and surface water. Individual
district metering area models were finalized and then combined in WaterGEMS
to check the sustainability of the whole system as well as the water balance