When usage matters: time-of-use analysis of Cape Town's Day Zero drought response

Poor resource management and infrastructure limitations make the effects of drought worse for cities in developing countries. One way to alleviate the impact without large investments is targeted demand management. This has worked well in studies that focused on some of the recent droughts, includin...

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Autores principales:	M. J. Booysen, C. Ripunda
Formato:	article
Lenguaje:	EN
Publicado:	IWA Publishing 2021
Materias:	developing country drought response household water usage targeted demand side management time-of-day analysis user behaviour Environmental technology. Sanitary engineering TD1-1066
Acceso en línea:	https://doaj.org/article/02b67b9ce157454084033a16348a597a
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spelling	oai:doaj.org-article:02b67b9ce157454084033a16348a597a2021-12-02T07:40:56ZWhen usage matters: time-of-use analysis of Cape Town's Day Zero drought response0273-12231996-973210.2166/wst.2021.324https://doaj.org/article/02b67b9ce157454084033a16348a597a2021-11-01T00:00:00Zhttp://wst.iwaponline.com/content/84/10-11/3122https://doaj.org/toc/0273-1223https://doaj.org/toc/1996-9732Poor resource management and infrastructure limitations make the effects of drought worse for cities in developing countries. One way to alleviate the impact without large investments is targeted demand management. This has worked well in studies that focused on some of the recent droughts, including Cape Town's ‘Day Zero’ drought of 2016–2018. Many studies have measured demand response to a drought at a coarse time resolution, but few have measured it at an hourly resolution or compared weekday with weekend use. In this study we evaluated households' hourly time-of-use behaviour in response to the Cape Town drought at two prominent inflection points identified by previous studies: the announcement of the Critical Water Shortages Disaster Plan in October 2017 and the introduction of Level 6B restrictions in February 2018. The first major reduction was caused by residents reducing their usage by about a third in the early morning and evening hours on weekdays, and the second, even larger, reduction was achieved in the mid-morning hours on weekdays when home owners were not at home but ensured that domestic workers used water sparingly. HIGHLIGHTS Demand side management works better than supply side in a developing country.; Cape Town's severe 2016-2018 drought necessitated drastic demand management.; We assessed consumer behaviour change with time-of-day and day-of-the-week analysis of household water usage.; The first big reduction was due to residents reducing usage in the early morning and evening on weekdays.; The second occurred in the mid-morning on weekdays when residents were not at home but ensured their domestic workers reduced their usage.;M. J. BooysenC. RipundaIWA Publishingarticledeveloping countrydrought responsehousehold water usagetargeted demand side managementtime-of-day analysisuser behaviourEnvironmental technology. Sanitary engineeringTD1-1066ENWater Science and Technology, Vol 84, Iss 10-11, Pp 3122-3131 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	developing country drought response household water usage targeted demand side management time-of-day analysis user behaviour Environmental technology. Sanitary engineering TD1-1066
spellingShingle	developing country drought response household water usage targeted demand side management time-of-day analysis user behaviour Environmental technology. Sanitary engineering TD1-1066 M. J. Booysen C. Ripunda When usage matters: time-of-use analysis of Cape Town's Day Zero drought response
description	Poor resource management and infrastructure limitations make the effects of drought worse for cities in developing countries. One way to alleviate the impact without large investments is targeted demand management. This has worked well in studies that focused on some of the recent droughts, including Cape Town's ‘Day Zero’ drought of 2016–2018. Many studies have measured demand response to a drought at a coarse time resolution, but few have measured it at an hourly resolution or compared weekday with weekend use. In this study we evaluated households' hourly time-of-use behaviour in response to the Cape Town drought at two prominent inflection points identified by previous studies: the announcement of the Critical Water Shortages Disaster Plan in October 2017 and the introduction of Level 6B restrictions in February 2018. The first major reduction was caused by residents reducing their usage by about a third in the early morning and evening hours on weekdays, and the second, even larger, reduction was achieved in the mid-morning hours on weekdays when home owners were not at home but ensured that domestic workers used water sparingly. HIGHLIGHTS Demand side management works better than supply side in a developing country.; Cape Town's severe 2016-2018 drought necessitated drastic demand management.; We assessed consumer behaviour change with time-of-day and day-of-the-week analysis of household water usage.; The first big reduction was due to residents reducing usage in the early morning and evening on weekdays.; The second occurred in the mid-morning on weekdays when residents were not at home but ensured their domestic workers reduced their usage.;
format	article
author	M. J. Booysen C. Ripunda
author_facet	M. J. Booysen C. Ripunda
author_sort	M. J. Booysen
title	When usage matters: time-of-use analysis of Cape Town's Day Zero drought response
title_short	When usage matters: time-of-use analysis of Cape Town's Day Zero drought response
title_full	When usage matters: time-of-use analysis of Cape Town's Day Zero drought response
title_fullStr	When usage matters: time-of-use analysis of Cape Town's Day Zero drought response
title_full_unstemmed	When usage matters: time-of-use analysis of Cape Town's Day Zero drought response
title_sort	when usage matters: time-of-use analysis of cape town's day zero drought response
publisher	IWA Publishing
publishDate	2021
url	https://doaj.org/article/02b67b9ce157454084033a16348a597a
work_keys_str_mv	AT mjbooysen whenusagematterstimeofuseanalysisofcapetownsdayzerodroughtresponse AT cripunda whenusagematterstimeofuseanalysisofcapetownsdayzerodroughtresponse
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When usage matters: time-of-use analysis of Cape Town's Day Zero drought response

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