Rainwater Harvesting in Universities: A Systematic Review of Applications and Benefits

Abstract

Rainwater harvesting system (RWHS) is one of the Best Management Practices (BMP) that provides alternative water resources and has emerged as a sustainable solution to address diverse water management challenges. This study systematically reviews the application of RWHS as an alternative water resource in universities, guided by two objectives: to identify the types of RWHS applied and to discuss their importance in supporting sustainable water management. The review followed five methodological stages: review protocol selection, research question development, systematic database searching (Web of Science and Scopus), quality appraisal, and data extraction and analysis. From 987 initial records, 13 articles were selected, revealing five RWHS types: rooftop, surface runoff, small-scale, wind-driven, and permeable pavement systems. Rooftop RWHS was the most applied and cost-effective, while surface and pavement systems were least implemented but offered dual benefits of runoff reduction and groundwater recharge. The review identifies several research gaps, including the lack of studies on long-term system performance, governance, and integration of RWHS within university sustainability frameworks. RWHS provides environmental benefits through water conservation, flood mitigation, and groundwater recharge, alongside economic advantages such as reduced utility costs and operational savings. Future research should conduct comparative and multi-regional analyses, assess innovative RWHS designs, and evaluate institutional and policy frameworks to strengthen the integration of RWHS into higher education sustainability initiatives.ReferencesAbuelfutouh, N. A. K., Jami, M. S., Abdurahman, N. H., Fuad, N. I. M. (2020). Rainwater harvesting quality assessment and evaluation: IIUM case study. IIUM Engineering Journal, 21(1), 12-22. https://doi.org/10.31436/iiumej.v21i1.1139Afifi, M., Stryhn, H., & Sanchez, J. (2023). Data extraction and comparison for complex systematic reviews: A step-by-step guideline and an implementation example using open-source software. Systematic Reviews, 12, Article 226. https://doi.org/10.1186/s13643-023-02322-1Ahmed, A., Valyrakis, M., Ghumman, A. R., Arshad, M., Pasha, G. A., Farooq, R., & Janjua, S. (2022). Assessing the rainfall water harvesting potential using Geographical Information Systems (GIS). CivilEng, 3(4), 895-908. https://doi.org/10.3390/civileng3040051Ali, N. B., & Usman, M. (2019). A critical appraisal tool for systematic literature reviews in software engineering. Information and Software Technology, 112, 48-50. https://doi.org/10.1016/j.infsof.2019.04.006Amos, C. C., Rahman, A., & Gathenya, J. M. (2016). Economic analysis and feasibility of rainwater harvesting systems in urban and peri-urban environments: A review of the global situation with a special focus on Australia and Kenya. Water, 8(4), Article 149. https://doi.org/10.3390/w8040149Anchan, S. S., & Prasad, H. C. S. (2021). Feasibility of roof top rainwater harvesting potential - A case study of South Indian University. Cleaner Engineering and Technology, 4, Article 100206. https://doi.org/10.1016/j.clet.2021.100206Aregarot, P., Kubaha, K., & Chiarakorn, S. (2024). A study of sustainability concepts for developing green universities in Thailand. Sustainability, 16(7), Article 2892. https://doi.org/10.3390/su16072892Augustine, E. E., & Hanafiah, M. M. (2019). Awareness level of water resource conservation of university students. Water Conservation and Management, 3(2), 18-21. https://doi.org/10.26480/wcm.02.2019.18.21Azmi, E., Rose, R. A. C., Awang, A., & Abas, A. (2023). Innovative and competitive: A systematic literature review on new tourism destinations and products for tourism supply. Sustainability, 15(2), Article 1187. https://doi.org/10.3390/su15021187Azmi, W. N. A. W. N., Wahid, N. H. A., Azman, S. M. S., & Jayus, R. (2024). Integrating sustainability into curricula: A systematic review of education for sustainable development. E-Bangi: Journal of Social Sciences and Humanities, 21(4), 103-119. https://doi.org/10.17576/ebangi.2024.2104.09Bateni, N., Fathil, N. S. M., Bustami, R. A., Lai, S. H., Mannan, M. A., & Mah, D. Y. S. (2022). Environmental assessment of stormpav green pavement for stormwater management. Journal of Sustainability Science and Management, 17(6), 182-192. http://doi.org/10.46754/jssm.2022.06.014Bouzidi, A. E., Anouar, A., & Bouzziri, M. (2024). Management and valuation of rainwater by alternative techniques, case of the University of Settat, in Morocco. Water Cycle, 5, 109-120. https://doi.org/10.1016/j.watcyc.2024.03.001Cardoso, R. N. C., Blanco, C. J. C., & Duarte, J. M. (2020). Technical and financial feasibility of rainwater harvesting systems in public buildings in Amazon, Brazil. Journal of Cleaner Production, 260, Article 121054. https://doi.org/10.1016/j.jclepro.2020.121054Che-Ani, A. I., Shaari, A., Zain, M. F. M., & Tahir, M. M. (2009). Rainwater harvesting as an alternative water supply in the future. European Journal of Scientific Research, 34(1), 132-140.Da Silva, M. B. M., De Paiva Brandão, I. A., & Ribeiro, M. M. R. (2022). Feasibility, seasonality and reliability of rainwater harvesting in buildings of a university in Campina Grande, Paraíba. Brazilian Journal of Water Resources, 27, Article e17. https://doi.org/10.1590/2318-0331.272220210127Dake, C., Shengyi, Q., & Yuming, S. U. (2021). Enhancing rainwater harvesting through pervious pavement system based on the principle of surface free energy. Civil Engineering and Urban Planning: An International Journal, 8(3), 11-18. https://www.airccse.com/civej/papers/8321civej02.pdfDawodu, A., Dai, H., Zou, T., Zhou, H., Lian, W., Oladejo, W., & Osebor, F. (2022). Campus sustainability research: Indicators and dimensions to consider for the design and assessment of a sustainable campus. Heliyon, 8(12), Article e11864. https://doi.org/10.1016/j.heliyon.2022.e11864Domingos, J. M. F., Marques, D. G., Campos, V., & Nolasco, M. A. (2024). Analysis of the water indicators in the UI Greenmetric applied to environmental performance in a university in Brazil. Sustainability, 16(20), Article 9014. https://doi.org/10.3390/su16209014Filho, J. V., Scortegagna, A., de Sousa Dias Vieira, A. P., Jaskowiak, P. A. (2024). Machine learning for water demand forecasting: Case study in a Brazilian coastal city. Water Practice & Technology, 19(5), 1586-1602. https://doi.org/10.2166/wpt.2024.096Garg, V., Bansal, A. K., & Dubey, M. K. (2022). Design of rain water harvesting structure for engineering block. Ecological Engineering & Environmental Technology, 23(1), 261–266. https://doi.org/10.12912/27197050/143383Goh, S. F., Che-Ani, A. I., Shaari, N., Mohd-Zain, M.F., & Surat, M. (2008). Traditional rainwater system to modern usage: A practical approach. 2nd International Conference on Built Environment in Developing Countries, Pulau Pinang, 576-587. http://eprints.usm.my/id/eprint/34460Goh, Y. C., & Ideris, M. (2021). Tangki NAHRIM 2.0: An R-based water balance model for rainwater harvesting tank sizing application. Water Practice & Technology, 16(1), 182-195. https://doi.org/10.2166/wpt.2020.106Hosseini, M. S., Jahanshahlou, F., Akbarzadeh, M. A., Zarei, M., & Vaez-Gharamaleki, Y. (2024). Formulating research questions for evidence-based studies. Journal of Medicine, Surgery, and Public Health, 2, Article 100046. https://doi.org/10.1016/j.glmedi.2023.100046Hunt, D. V. L., & Shahab, Z. (2021). Sustainable water use practices: understanding and awareness of masters level students. Sustainability, 13(19), Article 10499. https://doi.org/10.3390/su131910499Institute for Educational Research and Publication. (2022, April 28). Scopus vs Web of science journal; Which one is better. Institute for Educational Research and Publication. https://www.iferp.in/blog/2022/04/28/scopus-vs-web-of-science-journal-which-one-is-betterJalil, R. A., Sakke, N., & Jafar, A. (2024). Penggunaan, cabaran, dan hala tuju sistem penuaian hujan (SPAH): Satu penelitian awal. E-Bangi: Journal of Social Sciences and Humanities, 12(4), 164-175. https://doi.org/10.17576/ebangi.2024.2104.14Jian, Z., Kumar, M., & Werner, D. (2021). Real-world sustainability analysis of an innovative decentralized water system with rainwater harvesting and wastewater reclamation. Journal of Environmental Management, 280, Article 111639. https://doi.org/10.1016/j.jenvman.2020.111639Kapli, F. W. A., Azis, F. A., Suhaimi, H., Shamsuddin, N., & Abas, P. E. (2023). Feasibility studies of rainwater harvesting system for ablution purposes. Water, 15(9), Article 1686. https://doi.org/10.3390/w15091686Kiger, M. E., & Varpio, L. (2020). Thematic analysis of qualitative data: AMEE Guide No. 131. Medical Teacher, 42(8), 846–854. https://doi.org/10.1080/0142159X.2020.1755030Kolaski, K., Logan, L. R., & Ioannidis, J. P. A. (2023). Guidance to best tools and practices for systematic reviews. Systematic Reviews, 12(96). https://doi.org/10.1186/s13643-023-02255-9Kolavani, N. J., & Kolavani, N. J. (2020). Technical feasibility analysis of rainwater harvesting system implementation for domestic use. Sustainable Cities and Society, 62, Article 102340. https://doi.org/10.1016/j.scs.2020.102340Kumar, V., Mukwana, K. C., Jatoi, A. R., Hassan, M., Jakhrani, A. Q., Siyal, A. A., Zaman, K. U., & Kumar, L. (2022). GIS-based analysis of a rainwater harvesting system in the multipurpose hall of Quaid-e-Awam University of Engineering, Science, and Technology. Engineering, Technology & Applied Science Research, 12(4), 8837-8842. https://doi.org/10.48084/etasr.4995Lani, N. H. M., Yusop, Z., & Syafiuddin, A. (2018). A review of rainwater harvesting in Malaysia: Prospects and challenges. Water, 10(4), Article 506. https://doi.org/10.3390/w10040506Mostaffa, M. F., Musa, S. M. S., Zainal, R., Kasim, N., Noh, H. M., & Yassin, A. M. (2021). E-SPAH: Aesthetic innovation in UTHM’s small-scale rainwater harvesting system. International Journal of Integrated Engineering, 13(5), 239-246. https://doi.org/10.30880/ijie.2021.13.05.025Muchadeyi, M. T., Hernandez-Villafuerte, K., Di Tanna, G. L., Eckford, R. D., Feng, Y., Meregaglia, M., Peasgood, T., Petrou, S., Ubels, J., & Schlander, M. (2024). Quality appraisal in systematic literature reviews of studies eliciting health state utility values: Conceptual considerations. PharmacoEconomics, 42, 767-782. https://doi.org/10.1007/s40273-024-01365-zMuhiddin, A. A. M., Isa, H. M., Sakip, S. R. M., Nor, O. M., & Sedhu, D. S. (2023). Green campus implementation in the Malaysian public universities: Challenges and solutions. Planning Malaysia Journal, 21(1), 274-298. https://doi.org/10.21837/pm.v21i25.1239Musa, S. M. S., Mostaffa, M. F., Manap, N., Yassin, A. M., & Zainal, R. (2022). Small scale rainwater harvesting design for external usage. Environment and Ecology Research, 10(2), 267-274. https://doi.org/10.13189/eer.2022.100216Naeem, M., Ozuem, W., Howell, K., & Ranfagni, S. (2023). A step-by-step process of thematic analysis to develop a conceptual model in qualitative research. International Journal of Qualitative Methods, 22. https://doi.org/10.1177/16094069231205789Oberascher, M., Kinzel, C., Kastlunger, U., Schöpf, M., Grimm, K., Plaiasu, D., Rauch, W., & Sitzenfrei, R. (2022). Smart water campus – a testbed for smart water applications. Water Science & Technology, 86(11), 2834-2847. https://doi.org/10.2166/wst.2022.369Raimondi, A., Quinn, R., Abhijith, G. R., Becciu, G., & Ostfeld, A. (2023). Rainwater harvesting and treatment: State of the art and perspectives. Water, 15(8), Article 1518. https://doi.org/10.3390/w15081518Rainharvesting Systems. (2023). Types of rainwater harvesting systems. Rainharvesting Systems. https://rainharvesting.co.uk/types-of-rainwater-harvesting-systems/Richards, S., Rao, L., Connelly, S., Raj, A., Raveendran, L., Shirin, S., Jamwal, P., & Helliwell, R. (2021). Sustainable water resources through harvesting rainwater and the effectiveness of a low-cost water treatment. Journal of Environmental Management, 286, Article 112223. https://doi.org/10.1016/j.jenvman.2021.112223Richardson, J. (2024, September 4). History of rainwater harvesting. The Renewable Energy Hub. https://www.renewableenergyhub.co.uk/main/rainwater-harvesting-information/history-of-rainwater-harvestingSamzadeh, M., Din, N. C., Abdullah, Z., Mahyuddin, N., & Ismail, M. A. (2021). Feasibility of vertical rainwater harvesting via in-situ measurement of wind-driven rain loads on building facades in a tropical climate. International Journal of Built Environment and Sustainability, 8(3), 27-45. https://doi.org/10.11113/ijbes.v8.n3.736Scopus. (n.d.). Start exploring. Retrieved June 9, 2024, from https://www.scopus.com/pages/homeShaffril, H. A. M. (2020). Metodologi asas systematic literature review. Hayrol Azril Mohamed Shaffril.Soni, P., Medhi, H., Sagar, A., Garg, P., Singh, P., & Karna, U. (2022). Runoff estimation using digital image processing for residential areas. Aqua: Water Infrastructure, Ecosystems and Society, 71(8), 938-948. https://doi.org/10.2166/aqua.2022.070Sultana, S. (n.d.). Advantages and disadvantages of rainwater harvesting. Civil Engineering. https://civiltoday.com/water-resource-engineering/irrigation/412-advantages-and-disadvantages-of-rainwater-harvestingSuni, S., Firdaous, M. H., Zailani, F. F., Gödeke, S., Mohd Raffi, R., & Abas, P. E. (2025). Urban water management and public acceptance of rainwater harvesting systems: Insights from young and educated respondents in Muslim communities. Sustainability, 17(7), Article 3046. https://doi.org/10.3390/su17073046Teston, A., Piccinini Scolaro, T., Kuntz Maykot, J., & Ghisi, E. (2022). Comprehensive environmental assessment of rainwater harvesting systems: A literature review. Water, 14(17), Article 2716. https://doi.org/10.3390/w14172716Trifu, A., Smîdu, E., Badea, D. O., Bulboacă, E., & Haralambie, V. (2022). Applying the PRISMA method for obtaining systematic reviews of occupational safety issues in literature search. 10th International Symposium on Occupational Health and Safety, MATEC Web of Conferences, 354(00052), 1-8. https://doi.org/10.1051/matecconf/202235400052University of South Australia. (n.d.). Systematic reviews. University of South Australia. https://guides.library.unisa.edu.au/SystematicReviewsVaz, I. C. M., Ghisi, E., & Thives, L. P. (2021). Stormwater harvested from permeable pavements as a means to save potable water in buildings. Water, 13(14), Article 1896. https://doi.org/10.3390/w13141896Web of Science. (n.d.). Your trusted path to discovery. Retrieved June 9, 2024, from https://www.webofscience.com/wos/woscc/smart-searchXu W. D., Fletcher, T. D., Burns, M. J., & Cherqui, B. F. (2020). Real time control of rainwater harvesting systems: The benefits of increasing rainfall forecast window. Water Resources Research, 56(9), Article e2020WR027856. https://doi.org/10.1029/2020WR027856Yoo, C., Cho, E., Lee, M., & Kim, S. (2022). Observation experiment of wind-driven rain harvesting from a building wall. Water, 14(4), Article 603. https://doi.org/10.3390/w14040603