JWARP  Vol.12 No.6 , June 2020
Techno-Economic Assessment of Non-Revenue Water: A Case Study at AER, GWCL
Abstract: This study utilizes multiple regression analysis and the technique for computing economies of scale to evaluate the dynamics of NRW in the AER of GWCL. Data on monthly total production, billed consumption, total revenue, total production cost and the volume of NRW spanning the period January 2015 to June 2019, was obtained from the headquarters of AER and used for the analysis. The study showed that NRW averaged 40.3% for the period under consideration, which far exceeds the 25% threshold set by the World Bank for developing economies. It was also established that a fairly inelastic relationship exists between NRW and total revenue. Results further show that resources are not optimally used in the AER as proof of diseconomies of scale was observed.
Cite this paper: Sekyere, C. , Davis, F. , Fiagbe, Y. and Amoo, R. (2020) Techno-Economic Assessment of Non-Revenue Water: A Case Study at AER, GWCL. Journal of Water Resource and Protection, 12, 480-494. doi: 10.4236/jwarp.2020.126029.

[1]   Hu, D. (2006) Water Rights. An International and Comparative Study. IWA, London.

[2]   Mountford, H. (2011) Water: The Environmental Outlook to 2050. OECD Global Forum on Environment: Making Water Reform Happen, Paris, 25-26 October 2011, 1-21.

[3]   Report of the Secretary-General, Special Edition: Progress towards the Sustainable Development Goals.

[4]   Appiah, K., Du, J. and Sarpong, P.B. (2017) Non-Revenue Water Management in Ghana: The Opportunities and Challenges. Journal of Environment and Earth Science, 7, 59-67.

[5]   GWCL (2018) Ghana Water Company Limited Proposals for Review of Aggregate Revenue Requirement and Tariff.

[6]   Aqua Vitens Rand Ltd. (2007) Annual Report 2007. Accra.

[7]   Yeboah, P. (2008) Management of Non-Revenue Water: Case Study of the Water Supply in Accra, Ghana. Unpublished Master of Science Thesis, Water Engineering and Development Center, Department of Civil and building Engineering, University of Loughborough, Loughborough, 11-16.

[8]   International Water Association (2003) Managing Leakage by Managing Pressure. Practical Approach.

[9]   Maina, M. (2010) Determinants of High Non-Revenue Water: A Case of Water Utilities in Murang’a County, Kenya. An Unpublished Dissertation, Kenyatta University, Nairobi.

[10]   (2010) Ghana Water and Sanitation Sector Performance Report. Ministry of Water Resources, Works and Housing, Accra, 16-83.

[11]   Kingdom, B., Liemberger, R. and Marin, P. (2006) The Challenge of Reducing Non-Revenue Water (NRW) in Developing Countries—How the Private Sector Can Help: A Look at Performance-Based Service Contracting. Water Supply and Sanitation Sector Board Discussion Paper Series, Vol. 1, No. 8 (Report 39405), The World Bank, Washington DC, 1-52.

[12]   Farley, M., Ghazali, Z., Istandar, A., Singh, S. and Wyeth, G. (2008) The Manager’s Non-Revenue Water Handbook a Guide to Understanding Water Losses. USAID, Washington DC.

[13]   Kanosvamhira, T. and Matsa, M. (2017) The Determinants of Non-Revenue Water in Surugwi Town: A Case of Makusha Residential Area. Journal of Sustainable Development in Africa, 19, 92-104.

[14]   Shilehwa, C. and Gakuu, C. (2016) Factors Influencing Water Supply’s Non-Revenue Water Supply Scheme. International Journal of Management and Commerce Innovations, 4, 735-743.

[15]   Criminisi, A., Fontanazza, G., Freni and La Loggia, G. (2009) Evaluation of the Apparent Losses Caused by Water Meter Under-Registration in Intermittent Water Supply. Water Science and Technology, 60, 2373-2382.

[16]   Varian, H.R. (1992) Microeconomic Analysis. Third Edition, W.W. Norton and Company, Inc., New York, 1-22.

[17]   Nicholson, W. and Synder, C. (2008) Microeconomic Theory: Principles and Extensions. Tenth Edition, Thomson Higher Education, New York, 3-83.

[18]   Cameron, S. (1994) A Review of the Econometric Evidence on the Effects of Capital Punishment. Journal of Socio-Economics, 23, 197-214.

[19]   Jehle, G. and Reny, P. (2011) Advanced Microeconomic Theory. 3rd Edition, Financial Times Prentice Hall, London.

[20]   Hailu, D., Rendtorff-Smith, S. and Tsukada, R. (2011) Small-Scale Water Providers in Kenya: Pioneers or Predators. United Nations Development Programme, Poverty Reduction and Environment and Energy, New York, 2-35.

[21]   Gujarati, D.M. (2003) Essentials of Econometrics. 3rd Edition, McGraw-Hill International, New York.

[22]   Greene, W.H. (2008) Econometric Analysis. 6th Edition, Prentice-Hall, Upper Saddle River.

[23]   Mas-Colell, A.M. (1995) Microeconomic Theory. Oxford University Press, New York.

[24]   Decker, C.W. and Jordan, L.A. (2006) Managing Water Losses in Amman’s Renovated Network: A Case Study. Management of Environmental Quality: An International Journal, 17, 94-108.

[25]   Trow, S. (2005) Alternative Approaches to Setting Leakage Targets. In: Proceedings of Water Loss Conference Bucharest, International Water Association, Romania, 75-85.

[26]   Pearson, D. and Trow, S.W. (2005) Calculating Economic Levels of Leakage. Proceedings of Leakage 2005 Conference, Halifax, 1-16.