Analisis Pemanfaatan Rainwater Harvesting untuk Pemenuhan Kebutuhan Air Non-domestik

Muhammad Zahran Fakhri; Rizal Arif Setiawan; Henny Pratiwi Adi

doi:10.61132/jupiter.v3i5.1088

Authors

Muhammad Zahran Fakhri Universitas Islam Sultan Agung Semarang
Rizal Arif Setiawan Universitas Islam Sultan Agung Semarang
Henny Pratiwi Adi Universitas Islam Sultan Agung Semarang

DOI:

https://doi.org/10.61132/jupiter.v3i5.1088

Keywords:

Clean Water, Cost Efficiency, Rainwater Harvesting, Utilization of rainwater, Water Demand

Abstract

The increasing demand for clean water at the Faculty of Engineering, Sultan Agung Islamic University (UNISSULA) Semarang requires an alternative and sustainable water source. One effective solution is the implementation of a rainwater harvesting (RWH) system to meet non-domestic water needs such as toilet flushing, plant irrigation, and campus cleaning. This study aims to analyze the potential utilization of rainwater, design an appropriate RWH system, and evaluate its cost efficiency compared to the use of PDAM (regional water supply company) water. This research employed a quantitative approach by collecting primary data, including roof catchment area measurements and existing rainwater drainage conditions, as well as secondary data such as average rainfall, the number of campus users, and PDAM water tariffs. The analysis consisted of calculating the potential harvested rainwater volume, designing the RWH system, estimating installation costs, and comparing operational costs between RWH and PDAM water usage. The results indicate that the potential harvested rainwater volume from the building’s roof is approximately 7,054.5 liters/day, while the average non-domestic water demand is 3,170 liters/day, allowing water needs to be met during the rainy season. The implementation of the RWH system can also reduce water costs by up to 43,6%, equivalent to IDR 87.615.616 over a 20-year period. Therefore, the application of RWH is an effective and sustainable solution for water management within the campus while supporting operational cost efficiency.

References

Ali, I., Suhardjono, S., & Hendrawan, A. P. (2017). Pemanfaatan sistem pemanenan air hujan (rainwater harvesting system) di Perumahan Bone Biru Indah Permai Kota Watampone dalam rangka penerapan sistem drainase berkelanjutan. Jurnal Teknik Pengairan, 8(1), 26–38. https://doi.org/10.21776/ub.jtp.2017.008.01.03

Arifin, S., Adi, H. P., & Rochim, A. (2025). Sistem pemanenan air hujan dengan metode roof harvesting system untuk kebutuhan non-domestik. Journal Scientific of Mandalika (JSM), 6(5), 1296–1304. https://doi.org/10.36312/vol6iss5pp1296-1304

Astuti, N. (2014). Penyediaan air bersih oleh Perusahaan Daerah Air Minum (PDAM) Kota Sangatta Kabupaten Kutai Timur. EJournal Administrasi Negara, 3(2), 678–689.

Farhan, A., Saidah, H., & Supriyadi, A. (2021). Analisis perbandingan kurva intensitas durasi frekuensi (IDF) Kota Bima menggunakan data hujan terukur dan data hujan dari satelit Japan Aerospace Exploration Agency. Spektrum Sipil, 8(2), 105–116. https://doi.org/10.29303/spektrum.v8i2.213

Fathi, A. S., Utami, S. S., & Budiarto, R. (2014). Perancangan sistem rain water harvesting, studi kasus: Hotel Novotel Yogyakarta. Teknofisika, 3(2), 35–45.

Fatikasari, A. D., Aryaseta, B., & Tola, P. S. (2023). Rainwater harvesting system sebagai upaya penyediaan air di Desa Gili Ketapang. Selaparang: Jurnal Pengabdian Masyarakat Berkemajuan, 7(3), 1740–1748. https://doi.org/10.31764/jpmb.v7i3.16756

Hayatining Pamungkas, T., Infantri Yekti, M., & Adi Alit Putra, I. G. (2023). Perencanaan sistem pemanenan air hujan dalam memenuhi kebutuhan air di Nusa Penida (rainwater harvesting system planning to meet water needs in Nusa Penida). Jurnal Penelitian Pengelolaan Daerah Aliran Sungai, 7(1), 59–76. https://doi.org/10.59465/jppdas.2023.7.1.59-76

Jonizar, J., & Utari, R. (2019). Analisa curah hujan untuk pendugaan debit puncak pada DAS Aur Kecamatan Seberang Ulu II Palembang. Bearing: Jurnal Penelitian dan Kajian Teknik Sipil, 6(1), 16–23. https://doi.org/10.32502/jbearing.2199201961

Kodoatie, R. J., & Sjarief, R. (2010). Tata ruang air. Yogyakarta: CV Andi Offset.

Lubis, R. P. (2024). Penerapan sistem pemanenan air hujan (RWH) untuk pemenuhan kebutuhan air bersih masyarakat sebagai perencanaan wilayah Desa Klambir V Kebun, Kecamatan Hamparan Perak, Deli Serdang. Jurnal Minfo Polgan, 13(1), 1211–1219. https://doi.org/10.33395/jmp.v13i1.14012

Prawaka, F., Zakaria, A., & Tugiono, S. (2016). Analisis data curah hujan yang hilang dengan menggunakan metode normal ratio, inversed square distance, dan cara rata-rata aljabar (Studi kasus curah hujan beberapa stasiun hujan daerah Bandar Lampung). Jurnal Rekayasa Sipil dan Desain, 4(3), 397–406. https://doi.org/10.23960/jrsdd.v4i3.418

Putra, W. B., Dewi, N. I. K., & Busono, T. (2020). Penyediaan air bersih sistem kolektif: Analisis kebutuhan air bersih domestik pada perumahan klaster. Jurnal Arsitektur TERRACOTTA, 1(2), 115–123. https://doi.org/10.26760/terracotta.v1i2.4018

Quaresvita, C. (2016). Perencanaan sistem pemanenan air hujan sebagai alternatif penyediaan air bersih (Studi kasus Asrama ITS) [Skripsi]. Institut Teknologi Sepuluh Nopember.

Raharjo, A. P. (2019). Simulasi pengurangan limpasan permukaan menggunakan sistem pemanenan air hujan sederhana di kawasan penyangga perkotaan. Jurnal Alami, 3(1), 32–42. https://doi.org/10.29122/alami.v3i1.3448

Ratna Musa, R., Ramadhani, & Mallombasi, A. (2025). Kajian sistem drainase sebagai pengendali genangan air (Studi kasus Kota Aimas Kabupaten Sorong). Jurnal TESLINK: Teknik Sipil dan Lingkungan, 7(1), 180–192. https://doi.org/10.52005/teslink.v1i1.422

Saputra, A. N. S. E. (2024). Perancangan penampungan air hujan bawah tanah untuk menunjang kebutuhan air bersih [Skripsi]. Universitas Politeknik Negeri Semarang.

Scanlon, B. R., Fakhreddine, S., Rateb, A., de Graaf, I., Famiglietti, J., Gleeson, T., Grafton, R. Q., Jobbagy, E., Kebede, S., Kolusu, S. R., Konikow, L. F., Long, D., Mekonnen, M., Schmied, H. M., Mukherjee, A., & MacDonald, A. (n.d.). [Detail publikasi belum lengkap].