Bangalore Water Supply and Sewerage Board is powering its network with GIS to enable accurate and current information access across offices and internal departments to arrive at better solutions
Bangalore Water Supply and Sewerage Board (BWSSB) is the premier governmental agency responsible for water supply to Bangalore, the sixth largest city in India. The rapid expansion of the city and the resulting growing demand of water has placed tremendous pressure on its existing water supply infrastructure management.
Need for GIS at BWSSB
The following factors prompted the need for GIS at BWSSB:
• Minimising the time spent in production of maps required by BWSSB field personnel
• Non-availability of timely information
• Information on changes in capacity / repairs was not available even in a reasonable time to the senior management
• Access to accurate and current information across offices and internal departments
• Reducing the operational costs for the organisation
• Easy maintenance of vital records (by getting rid of the large number of hard copy maps)
• Better analysis to arrive at better solutions, due to the availability of timely data from all front end offices
• Planning of project, improved financial management & revenue collection.
GIS evolution and implementation
The GIS development and utility computerisation project for BWSSB was conducted between November 2000 and November 2002 by M/s SCE, France and its project partner IRAM consultant in two phases and covered 290 sq km of BWSSB jurisdiction areas. The project consisted of mapping of various assets of BWSSB which included digitisation of buildings, roads, green areas, lakes, water bodies, water and sewer pipelines, valves, manholes, fire hydrients, consumer connections. The asset information of BWSSB was distributed at four levels – BBMP limits, division limits, sub-division limits and service station limits.
The BWSSB GIS area covers 800 sq.km, including the core area of 245 sq. km, eight urban local bodies covering 330 sq. km, 110 villages covering 225 sq. km, nine divisions, 28 subdivisions, and 104 service stations.
The features covered in BWSSB GIS layers include point features, line features and polygon features. The present GIS system for BWSSB is at scale 1:1000.
The analysis carried out in GIS includes:
• Service station-wise / Sub-division-wise/ division-wise water supply and sewer lines
• Diameter-wise water supply and sewer lines
• Age-wise water supply and sewer lines
• Material-wise water supply and sewer lines
• Identification of consumer service station-wise /sub-division-wise/division wise
• Location of areas frequently prone to contamination
In the near future, BWSSB plans to host GIS data (intranet / internet) on the web. This will allow all staff / consumers to view the spatial data. This will also enable users to view updated data across the organisation in near real time. Other plans include network rehabilitation, fixing visible leaks, isolating valve and hydrant rehabilitation and remedial pipe work.