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The Effects of Consolidation amongst Japanese Water Utilities

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  • Takuya Urakami
  • David Parker

Abstract

In many parts of the world, water is supplied by very small, local undertakings. In recent years, there has been a move to consolidation of these utilities in a number of countries. This paper looks at the economic effects of consolidation of Japanese water utilities in the period 1999–2006 using translog cost functions with a hedonic output specification. The results clarify what factors have been most affected in terms of the cost structure of the water utilities after consolidation. Overall, the finding is that consolidation has had some beneficial impact on cost effectiveness, but that the result is surprisingly limited. This appears to be because cost savings from an improvement in the use of scarce water resources have been offset by extra expenditure on supplying water to areas with lower population density.

Suggested Citation

  • Takuya Urakami & David Parker, 2011. "The Effects of Consolidation amongst Japanese Water Utilities," Urban Studies, Urban Studies Journal Limited, vol. 48(13), pages 2805-2825, October.
    • Handle: RePEc:sae:urbstu:v:48:y:2011:i:13:p:2805-2825
    DOI: 10.1177/0042098010391286
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    Cited by:

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    2. François Destandau & Serge Garcia, 2014. "Service quality, scale economies and ownership: an econometric analysis of water supply costs," Journal of Regulatory Economics, Springer, vol. 46(2), pages 152-182, October.
    3. Saal David S. & Arocena Pablo & Maziotis Alexandros & Triebs Thomas, 2013. "Scale and Scope Economies and the Efficient Vertical and Horizontal Configuration of the Water Industry: A Survey of the Literature," Review of Network Economics, De Gruyter, vol. 12(1), pages 93-129, March.
    4. Zschille, Michael, 2012. "Consolidating the Water Industry: An Analysis of the Potential Gains from Horizontal Integration in a Conditional Efficiency Fr," CEPR Discussion Papers 8737, C.E.P.R. Discussion Papers.
    5. Nakatani, Ryota, 2022. "Productivity drivers of infrastructure companies: network industries to maximize economies of scale in the digital era," MPRA Paper 115531, University Library of Munich, Germany.
    6. Klien, Michael & Michaud, David, 2019. "Water utility consolidation: Are economies of scale realized?," Utilities Policy, Elsevier, vol. 61(C).
    7. Michael Zschille, 2014. "Marktstrukturen in der Trinkwasserversorgung," DIW Roundup: Politik im Fokus 43, DIW Berlin, German Institute for Economic Research.
    8. Michael Zschille, 2016. "Cost Structure and Economies of Scale in German Water Supply," Discussion Papers of DIW Berlin 1576, DIW Berlin, German Institute for Economic Research.
    9. Molinos-Senante, María & Maziotis, Alexandros & Sala-Garrido, Ramón, 2020. "Changes in the total costs of the English and Welsh water and sewerage industry: The decomposed effect of price and quantity inputs on efficiency," Utilities Policy, Elsevier, vol. 66(C).
    10. Graziano Abrate & Clementina Bruno & Fabrizio Erbetta & Giovanni Fraquelli & Anna Giolitti, 2017. "Efficiency in the Consolidation of the Italian Water Sector," Water Resources Management: An International Journal, Published for the European Water Resources Association (EWRA), Springer;European Water Resources Association (EWRA), vol. 31(8), pages 2447-2463, June.
    11. Michael Zschille, 2012. "Consolidating the Water Industry: An Analysis of the Potential Gains from Horizontal Integration in a Conditional Efficiency Framework," Discussion Papers of DIW Berlin 1187, DIW Berlin, German Institute for Economic Research.
    12. Augusto Mercadier & Walter Cont & Gustavo Ferro, 2016. "Economies of scale in Peru’s water and sanitation sector," Journal of Productivity Analysis, Springer, vol. 45(2), pages 215-228, April.
    13. Arocena, Pablo & Saal, David S. & Urakami, Takuya & Zschille, Michael, 2020. "Measuring and decomposing productivity change in the presence of mergers," European Journal of Operational Research, Elsevier, vol. 282(1), pages 319-333.
    14. Clementina Bruno & Fabrizio Erbetta & Giovanni Fraquelli & Anna Giolitti, 2014. "The efficiency effects of merging Italian water companies," ECONOMIA E DIRITTO DEL TERZIARIO, FrancoAngeli Editore, vol. 2014(3), pages 425-442.
    15. Liu, Junqing & Fukushige, Mototsugu, 2020. "Efficiency and pricing of water supply and sewerage services in Japan," Utilities Policy, Elsevier, vol. 62(C).
    16. Salazar-Adams, Alejandro, 2021. "The efficiency of post-reform water utilities in Mexico," Utilities Policy, Elsevier, vol. 68(C).
    17. Michelle Phillips, 2013. "Inefficiency in Japanese water utility firms: a stochastic frontier approach," Journal of Regulatory Economics, Springer, vol. 44(2), pages 197-214, October.
    18. Michael Zschille, 2015. "Consolidating the water industry: an analysis of the potential gains from horizontal integration in a conditional efficiency framework," Journal of Productivity Analysis, Springer, vol. 44(1), pages 97-114, August.
    19. Urakami, Takuya & Saal, David S. & Nieswand, Maria, 2021. "Industry Fragmentation and Wastewater Efficiency: A Case Study of Hyogo Prefecture in Japan," ADBI Working Papers 1218, Asian Development Bank Institute.

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