Title: Building a performance indicator to investigate the robustness of water supply utilities in Japan

Authors: Yuji Kawase; Yusuke Maeno; M.L.U.K. Piyasena; Tatsuo Oyama

Addresses: METAWATER Co., Ltd., Corporate Strategy Planning Division, JR Kanda Manseibashi Bldg. 1-25, Kanda-Sudacho, Chiyoda-ku, Tokyo, 101-0041, Japan ' METAWATER Co., Ltd., Corporate Strategy Planning Division, JR Kanda Manseibashi Bldg. 1-25, Kanda-Sudacho, Chiyoda-ku, Tokyo, 101-0041, Japan ' National Graduate Institute for Policy Studies (GRIPS), 7-22-1, Roppongi, Minato-ku, Tokyo 106-8677, Japan ' National Graduate Institute for Policy Studies (GRIPS), 7-22-1, Roppongi, Minato-ku, Tokyo 106-8677, Japan

Abstract: In this study, we build a work performance indicator (WPI) for quantitatively measuring the performances of water supply utilities in Japan. The WPI is defined from three different perspectives: management, facility/equipment, and operations. It can be used to measure the robustness of a water supply network system. Based on actual data expressing the work performances of Japanese water supply utilities from 1980 to 2018, we illustrate the numerical results of the WPIs, so as to determine their regional characteristics. We apply statistical data analysis techniques (such as a cluster analysis and principal component analysis) to calculate the WPIs, and investigate the historical and regional characteristics and trends of water supply utilities in Japan during the investigated period. These approaches can be applied to design and improve natural disaster mitigation policies, such as those focusing on earthquakes in Japan.

Keywords: water supply utility; work performance indicator; WPI; robustness; water supply network; statistical data analysis; cluster analysis; principal component analysis; PCA; Japan.

DOI: 10.1504/AJMSA.2021.120425

Asian Journal of Management Science and Applications, 2021 Vol.6 No.2, pp.85 - 108

Received: 15 Mar 2021
Accepted: 24 May 2021
Published online: 19 Jan 2022 *

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