Open Access

ARTICLE

Spatial Assessment of Wastewater Requirements for the New Capital City of Indonesia

Walter Timo de Vries^*, Veronica Cristina Astudillo Avila, Achmad Ghozali

Chair Land Management, School of Engineering and Design, Technical University of Munich, Munich, 80333, Germany

* Corresponding Author: Walter Timo de Vries. Email:

Revue Internationale de Géomatique 2025, 34, 125-149. https://doi.org/10.32604/rig.2025.057970

Received 01 September 2024; Accepted 13 February 2025; Issue published 11 March 2025

Abstract

The development of Indonesia’s New Capital City (Ibu Kota Negara (IKN)) does not only offer opportunities but also faces uncertainties. One of these concerns is wastewater management, in terms of volume, location, and treatment facilities. To evaluate how the city might be able to manage this, this study starts with a theoretical evaluation of which wastewater management principles are crucial. Then the empirical study evaluates where and how the current infrastructure of the IKN could manage the wastewater and assesses—based on spatial scenarios—if the current wastewater management plans for the IKN are adequate. A Geographic Information System (GIS)-based analysis assesses the suitability of current wastewater treatment locations and develops scenarios for the best possible infrastructure extensions. The analysis yields that the most suitable sites for wastewater treatment primarily depend on existing topography and on land use changes due to future migration. As the latter is largely unknown, it requires expert assessments on deciding where to set up and/or expand the wastewater management system (WWMS), and how to manage it economically and socio-culturally. The assessments are compared to how the IKN authority aims for “Circular and Resilient” WWMS, which differs from conventional wastewater treatment plants. The comparison proves that it is necessary to tailor a WWMS to how and where IKN may develop. The early findings necessitate, however, further monitoring of spatial expansion and further research in smart city designs.

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Keywords

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