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All Journal Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Jurnal Teknik Sumber Daya Air
Sudiarti, Sri Utami
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Agriculture, Biological Sciences & Forestry Civil Engineering, Building, Construction & Architecture Earth & Planetary Sciences Energy Engineering Environmental Science

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Kajian Faktor Dominan terhadap Penilaian Kinerja Sistem Penyediaan Air Minum (SPAM) di Provinsi Nusa Tenggara Barat : Study of Dominant Factors on Performance Assessment of Drinking Water Supply System (SPAM) in the Province of West Nusa Tenggara Sudiarti, Sri Utami; Utama, Satria
Jurnal Teknik Sumber Daya Air Vol. 4 No. 2 (Desember 2024)
Publisher : Himpunan Ahli Teknik Hidraulik Indonesia (HATHI)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.56860/jtsda.v4i2.101

Abstract

West Nusa Tenggara Province has 8 (eight) BUMDs (Regional Owned Enterprises) managing drinking water divided into two islands namely Lombok island and Sumbawa island where the study location is seven BUMDs. The two islands each have 4 (four) drinking water management bodies. There are four aspects of SPAM performance assessment based on PP 122/2015, namely financial aspects, service aspects, operational aspects, and human resource aspects. This study aims to find the dominant factors that influence the SPAM performance assessment. Quantitative research method applied using fuzzy cluster means (Fuzzy C-Means). The results showed that in the span of 2017 - 2022 the performance of SPAM Lombok island from 4 (four) BUMDs there are two healthy and two others less healthy. While Sumbawa island is less healthy on average. The dominant factors affecting the performance of these BUMDs are operational aspects and financial aspects where the dominant operational aspect is the level of water loss in the drinking water distribution system. The dominant financial aspect is liquidity including cash ratio and billing effectiveness. These dominant factors from the seven BUMDs obtained values that affect the BUMD performance value so that it falls into the category of healthy, less healthy and sick. This study results in efforts that need to be made to improve the performance condition of BUMD in the ‘sick’ category by knowing the dominant factors.
Decision-Ready Composite Performance Index for Raw Water Supply Systems: PLS-SEM and Generalized Reduced Gradient Andawayanti, Ussy; Suhartanto, Ery; Lufira, Rahmah Dara; Siswoyo, Hari; Sudiarti, Sri Utami; Pratama, Rizki Ramadhani
Jurnal Presipitasi : Media Komunikasi dan Pengembangan Teknik Lingkungan Vol 23, No 1 (2026): March 2026
Publisher : Universitas Diponegoro

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.14710/presipitasi.v23i1.339-350

Abstract

Reliable raw water service depends on asset condition, institutional capability, and watershed context; existing checklists in Indonesia fail to produce a validated, decision-ready performance score.  This study develops a composite performance indicator for raw water infrastructure that incorporates technical (Tk), institutional/non-technical (NT), and environmental (Li) dimensions. Data were collected from 21 schemes in Lombok–Sumbawa, West Nusa Tenggara Province, Indonesia (NTB), with 160 respondents, using field assessments and 1–4 scale questionnaires. Estimated reflective formative partial least squares structural equation modeling was then applied, and GRG calibration was used to minimize deviation from field scores under non-negativity and unit sum constraints for interpretability and portability. All pillars contribute positively and significantly to the composite index, which exhibits high explanatory power (R² = 0.997). The calibrated index is PIRWSS = 0.440 PITk + 0.340 PINT + 0.220 PILi, with SSR ≈ 83.412, RMSE ≈ 0.522, MSE ≈ 5.721, and ≈ 99.70% accuracy relative to field benchmarks. A cross-site analysis shows higher performance in Lombok than in Sumbawa, reflecting hydroclimatic conditions and conveyance configurations. The index provides utilities and regulators with a transparent, reproducible framework for benchmarking and prioritizing operations, maintenance, rehabilitation, and source water protection
Co-Authors Ery Suhartanto hari siswoyo Pratama, Rizki Ramadhani Rahmah Dara Lufira Satria Utama, Satria Ussy Andawayanti