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Section II

A Water Management System for Reducing Non-Revenue Water in Potable Water Lines: The Case of Sri Lanka

Authors:

B. A. K. S. Perera ,

University of Moratuwa, LK
About B. A. K. S.

Professor, Department of Building Economics

B.Sc. (Hons) in Quantity Surveying, M.Phil. in Building Economics, FIQSSL, FAIQS, FRICS, ICECA,

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H. Mallawaarachchi,

University of Moratuwa, LK
About H.

Lecturer, Department of Building Economics

B.Sc. (Hons) in Facilities Management, M.Phil. in Building Economics,

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K. S. Jayasanka,

Bu Haleeba Contracting Co., AE
About K. S.

Quantity Surveyor

B.Sc. (Hons) in Quantity Surveying,

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R. R. P. N. Rathnayake

National Water Supply and Drainage Board, LK
About R. R. P. N.

Water Treatment Specialist

B.Sc. (Hons) in Engineering, PG Diploma in Environmental Engineering,

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Abstract

In every country, a significant quantity of water is lost from the distribution system before it could be billed. This water named as non-revenue water (NRW) reduces considerably the revenue earned by the utility by selling treated water. Thus, this research aimed to propose a cost effective management system for the non-revenue water lost from the water distribution system in Sri Lanka. The research used a quantitative approach. A questionnaire survey was carried out to identify the severity of each type of water loss. The data collected were analysed to categorize under four main groups the causes that produce non-revenue water in the distribution systems: distribution line leaks, administrative errors, illegal water usage and free water supply. Finally, a cost effective management model was developed outlining the strategies that could be adopted to prevent the different types of water losses. The cost effectiveness of investing in non-revenue water reduction in the water distribution system in Sri Lanka was determined by referring to archival records. The cost effective model developed would be useful in long-term planning to significantly reduce the water lost from the distribution systems in the country.
How to Cite: Perera, B.A.K.S., Mallawaarachchi, H., Jayasanka, K.S. and Rathnayake, R.R.P.N., 2018. A Water Management System for Reducing Non-Revenue Water in Potable Water Lines: The Case of Sri Lanka. Engineer: Journal of the Institution of Engineers, Sri Lanka, 51(2), pp.53–62. DOI: http://doi.org/10.4038/engineer.v51i2.7295
Published on 30 Apr 2018.
Peer Reviewed

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