Bridging the Social-Institutional Gap in Sanitation Technology Implementation: A Case Study of Pontianak’s Riverbank Slums

Adillah Nur Azmina Rahmah (1) , Ahmad Soleh Setiyawan (2) , Nico Halomoan (3) , Prayatni Soewondo (4) , Prasanti Widyasih Sarli (5)
(1) Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung, Indonesia,
(2) Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung, Indonesia,
(3) Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung, Indonesia,
(4) Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung, Indonesia, Indonesia,
(5) Faculty of Civil and Environmental Engineering, Bandung Institute of Technology, Bandung, Indonesia

Abstract

Slum settlements along riverbanks face complex challenges in accessing adequate sanitation due to limited space, flooding risks, and institutional fragmentation. This study examines the implementation of Tripikon, a decentralized wastewater treatment system, in Pontianak City’s riverbank slums. Using a convergent parallel mixed methods approach, data were collected from 70 households via census sampling, complemented by in-depth interviews with six institutional stakeholders. Community participation was analyzed through a structural empowerment model using SmartPLS. Results show that opportunity structure, comprising regulatory support and institutional capacity, has a significant effect on participation (β = 0.462, p < 0.001), while community agency alone is insufficient. Field observations reveal that only 3 of 8 Tripikon units remain functional due to gaps in community involvement, monitoring, and technical support. Institutional interviews further highlight unclear operational mandates, fragmented responsibilities, and heavy reliance on national funding. The study concludes that bridging the social-institutional gap requires clearer role delineation, diversified financing, and stronger coordination mechanisms. This case study offers insights for sustainable sanitation interventions in informal urban settings, particularly those facing jurisdictional and infrastructural constraints

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Authors

Adillah Nur Azmina Rahmah
adillahami@gmail.com (Primary Contact)
Ahmad Soleh Setiyawan
Nico Halomoan
Prayatni Soewondo
Prasanti Widyasih Sarli
Rahmah, A. N. A., Setiyawan, A. S., Halomoan, N., Soewondo, P., & Sarli, P. W. (2026). Bridging the Social-Institutional Gap in Sanitation Technology Implementation: A Case Study of Pontianak’s Riverbank Slums . Jurnal Teknik Lingkungan, 32(1), 11–20. https://doi.org/10.5614/j.tl.2026.32.1.2
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