Fresh water is becoming increasingly scarce everywhere around the world especially in developing countries including Rwanda due to population growth. Rooftop rainwater harvesting as the most traditional and sustainable method, could be easily used for potable if well collected and managed. This paper was to analyze how households of the Niboye Sector harvest the rainwater, use it and the challenges they face in this practice. The findings from a survey conducted in the area revealed that RWH is effectively practised by using multiple techniques varying from simple techniques such as jars and pots to more complex techniques like plastic tanks as well as underground cisterns depending on households’ financial capacities. Given that this study focused on plastic tanks, it was found that 71 out 108 respondents possess plastic tanks of different sizes (from 1000 litres to more than 10,000 litres) and 71% of respondents use rainwater as sole source of drinking water during rainy season. As expressed by 93% the challenges faced are based on lack of financial means and 82% of respondents emphasized insufficient people’s knowledge with regard to RWH and its use while 81% put emphasis on lack of clear policy, etc. Hence, the study recommended local authorities and different civil society organisations operating in the area, support local community initiative in terms of finance and sensitisation for enhancing their knowledge and skills for the sustainable rainwater management.
Cite this paper
Kagabika, B. M. and Kankuyu, O. (2021). Rooftop Rainwater Harvesting for Sustainable Development of Households in City of Kigali: Case of Niboye Sector in Kicukiro-District. Open Access Library Journal, 8, e6567. doi: http://dx.doi.org/10.4236/oalib.1106567.
United Nations Environmental Programme UNEP (2010) Africa Water Atlas. UNEP, Nairobi, 212.
https://wedocs.unep.org/bitstream/handle/20.500.11822/7919/africa_water_atlas.pdf?sequence=3&isAllowed=y
UN (2015) Water and Sustainable Development. International Decade for Action Water for Life 2005-2015.
https://www.un.org/waterforlifedecade/water_and_sustainable_development.shtml
Tsinda, A. and Abbott, P. (2018) Critical Water, Sanitation and Hygiene (WASH) Challenges in Rwanda. The Centre for Global Development, University of Aberdeen, Aberdeen. https://www.cgd@abdn.ac.uk
Cowden, J.R. (2008) Planning and Adaption Measures for Urban Slum Communities in West Africa: Stochastic Rainfall Modeling Applied to Domestic and Rainwater Harvesting Climate Change Adaption.
Lay, J.J. (2010) Water Quality and the First-Flush Effect in Roof-Based Rainwater Harvesting. Bachelor of Science in Biosystem Engineering, Bache Oklahoma State University, Stillwater.
Dris, A. (2005) L’eau, matière stratégique et enjeu de sécurité au 21ème siècle Université de Paris 10—Memoire de DEA en Sciences Politiques.
https://www.memoireonline.com/04/08/1056/l-eau-matiere--strategique-enjeu-de-securite-21-eme-siecle.html
Kanamugire, J. (2018) Demand for Water in Kigali May Result in Rationing.
http://rwandatoday.africa/news/Demand-for-water-in-Kigali-may-result-in-rationing/4383214-4766176-gjomw7z/index.html
United Nations Environmental Programme (UNEP) (1997) Rainwater Harvesting from Rooftop Catchments. The Sourcebook of Alternative Technologies for Freshwater Augmentation in Latin America and the Caribbean.
http://www.oas.org/usde/publications/unit/oea59e/ch10.htm
Sen, Z., Alsheikh, A.A., Al-Turbak, A.S., Al-Bassam, A.M. and Al-Dakheel, A.M. (2013) Climate Change Impact and Runoff Harvesting in Arid Regions. Arabian Journal of Geosciences, 6, 287-295. https://doi.org/10.1007/s12517-011-0354-z
Nguyen, D.C., Dao, A.D., Kim, T. and Han, M. (2013) A Sustainability Assessment of the Rainwater Harvesting System for Drinking Water Supply: A Case Study of Cuk the Village, Hanoi, Vietnam. Environmental Engineering Research, 18, 109-114.
https://doi.org/10.4491/eer.2013.18.2.109
Lye, D.J. (2009) Rooftop Runoff as a Source of Contamination: A Review. Science of the Total Environment, 407, 5429-5434.
https://doi.org/10.1016/j.scitotenv.2009.07.011
Kim, L., Kayhanian, M., Zoh, K. and Stenstrom, M.K. (2005) Modeling of Highway Stormwater Runoff. Large Roofs: A Case Study in Melbourne, Australia. Resources, Conservation & Recycling, 55, 1022-1029.
https://doi.org/10.1016/j.scitotenv.2004.12.063
Eroksuz, E. and Rahman, A. (2010) Rainwater Tanks in Multi-Unit Buildings: A Case Study for Three Australian Cities. Resources, Conservation and Recycling, 54, 1449-1452. https://doi.org/10.1016/j.resconrec.2010.06.010
Zhu, K., Zhang, L., Hart, W., Liu, M. and Chen, H. (2004) Quality Issues in Harvested Rainwater in Arid and Semi-Arid Loess Plateau of Northern China. Journal of Arid Environments, 57, 487-505. https://doi.org/10.1016/S0140-1963(03)00118-6
Farreny, R., Gabarrel, X. and Rieradevall, J. (2011) Cost-Efficiency of Rainwater Harvesting Strategies in Dense Mediterranean Neighbourhoods. Resources, Conservation & Recycling, 55, 686-694. https://doi.org/10.1016/j.resconrec.2011.01.008
Islam, M.M., Chou, F.N., Kabir, M.R. and Liaw, C. (2010) Rainwater: A Potential Alternative Source for Scarce Safe Drinking and Arsenic Contaminated Water in Bangladesh. Water Resource Management, 24, 3987-4008.
https://doi.org/10.1007/s11269-010-9643-7
Fletcher, T.D., Deletic, A., Mitchell, V.G. and Hatt, B.E. (2008) Reuse of Urban Runoff in Australia: A Review of Recent Advances and Remaining Challenges. Journal of Environmental Quality, 37, S116-S127. https://doi.org/10.2134/jeq2007.0411
Qadir, M., Sharma, B., Bruggeman, A., Choukr-Allah, R. and Karajeh, F. (2007) Non-Conventional Water Resources and Opportunities for Water Augmentation to Achieve Food Security in Water Scarce Countries. Agricultural Water Management, 87, 2-22. https://doi.org/10.1016/j.agwat.2006.03.018
Villarreal, E.L., Semadeni-Davies, A. and Bengtsson, L. (2004) Inner City Storm Water Control Using a Combination of Best Management Practices. Ecological Engineering, 22, 279-298. https://doi.org/10.1016/j.ecoleng.2004.06.007
Angrill, S., Farreny, R. and Gasol, C.M. (2012) Environmental Analysis of Rain Water Harvesting Infrastructures in Diffuse and Compact Urban Models of Mediterranean Climate. The International Journal of Life Cycle Assessment, 17, 25-42.
https://doi.org/10.1007/s11367-011-0330-6
Cunliffe, D.A. (1998) Guidance on the Use of Rainwater Tanks. National Environmental Health Forum Monographs Water Series No. 3.
https://www.ircsa.org/factsheets/Cunliffe.pdf