Quantification of daily urban water consumption using temporal disaggregation technic

Abstract

 The volume of urban water used in Japan has been gradually declining in recent years because of the changes in water consumption characteristics (i.e., water saving appliances and behaviours). These changes affect the effect of water supply restrictions (supply hour restriction or pressure reduction) imposed by water suppliers for saving reservoir water during drought time. Intensity of water supply restrictions is changed on a daily basis, then daily water consumption data for each sector (i.e., household, commercial) are necessary for such analysis as effect of water supply restrictions, however those are not measured. In previous research, we estimated daily sectoral water consumption by distributing monthly measured sectoral water consumption referring daily urban water supply. We propose estimation method of daily sectoral water consumption using temporal disaggregation technic. This method is useful for water suppliers, because the method is simple and with easy data availability.