Development of Forecasting Method Concerning Water Demands in The Tokyo Metropolitan Waterworks Service Area

Abstract

In the previous study, a formula of forecasting water demand was proposed using a multivariate regression analysis with correlation between water demand and the factors that heavily influence it. We also proposed a forecasting method that considers variations in economic conditions for the service area. In this paper, we apply the water demand forecasting method proposed for the Kanagawa prefectural waterworks service area to the water demand for Tokyo metropolitan area. Moreover, we obtain evaluation for regulation factors that reveal higher forecasting precision. Even so, the scale of water services for Tokyo metropolitan is larger than that of the Kanagawa prefectural area. Finally, we show that the forecasting method used for small-scale waterworks can be utilized for large-scale waterworks.