In recent years, contamination of water in water distribution systems (WDS) has been recognized as a major cause of waterborne diseases. Owing to old and deteriorated pipes, and the presence of pollution sources in contact with the supply line, water boards often decide to replace the network in the interests of public health. This being a cost-intensive and time-consuming programme, decision makers need a basis for phase-wise investment planning. In view of this, Integrated Risk Assessment of Water Distribution System (IRA-WDS) for the supply network of Adikmet Subzone-I in Hyderabad, India, was undertaken. GIS maps were prepared for the water supply network, sewer network, open drains, soil and groundwater table at 1:2,200 scale and ‘pipe condition assessment’ and identification of ‘contaminant ingress’ locations were performed using IRA-WDS. Findings indicated 18 pipes in ‘very bad’ and ‘bad’ condition in the entire network. ‘High risk’ of contamination was exhibited in 20 locations, suggesting the need for rehabilitation of only 2 to 3% of pipes in the initial phase.
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August 2010
This article was originally published in
Journal of Water Supply: Research and Technology-Aqua
Article Contents
Research Article|
August 01 2010
Risk assessment study for water supply network using GIS
Aabha Sargaonkar;
1Environmental Systems Design and Modelling Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India Tel.: +91 0712-2249886-88 (ext. 358) Fax: +91 0712-2249900 E-mail: [email protected]
E-mail: [email protected]
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Shweta Nema;
Shweta Nema
1Environmental Systems Design and Modelling Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India Tel.: +91 0712-2249886-88 (ext. 358) Fax: +91 0712-2249900 E-mail: [email protected]
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Apurba Gupta;
Apurba Gupta
1Environmental Systems Design and Modelling Division, National Environmental Engineering Research Institute, Nehru Marg, Nagpur 440 020, India Tel.: +91 0712-2249886-88 (ext. 358) Fax: +91 0712-2249900 E-mail: [email protected]
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Achintyakumar Sengupta
Achintyakumar Sengupta
2WHO, India Country Office, 110011 India E-mail: [email protected]
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Journal of Water Supply: Research and Technology-Aqua (2010) 59 (5): 355–360.
Article history
Received:
August 25 2009
Accepted:
February 25 2010
Citation
Aabha Sargaonkar, Shweta Nema, Apurba Gupta, Achintyakumar Sengupta; Risk assessment study for water supply network using GIS. Journal of Water Supply: Research and Technology-Aqua 1 August 2010; 59 (5): 355–360. doi: https://doi.org/10.2166/aqua.2010.090
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