n Journal of the South African Institution of Civil Engineering = Joernaal van die Suid-Afrikaanse Instituut van Siviele Ingenieurswese - Analysis of water savings : a case study during the 2004 / 05 water restrictions in Cape Town : technical paper




In October 2004 the City of Cape Town implemented water restrictions in line with the city's holistic approach to water demand management. To better understand the savings and improve the effectiveness of future restrictions, a detailed demand analysis was conducted during this period. In this paper the authors report on various aspects pertaining to the savings achieved. Emphasis is placed on the residential sector, but savings from other sectors are also presented. This is the first reported work in South Africa on the analysis of metered water demand and savings obtained in different consumer categories during water restrictions. Monthly metered consumption prior to and during water restrictions was recorded and analysed. The analysis shows that the water restrictions resulted in notable water savings in all administrative areas and for all land use, stand size and income categories included in the analysis. The residential sector is found to have a significant contribution to the total water saving. The paper explains the nature of these savings and also addresses the pitfalls and successes of the project.


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