Rainwater Harvesting-an alternative water supply in the Future for Pakistan

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Research Paper 01/06/2016
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Rainwater Harvesting-an alternative water supply in the Future for Pakistan

Ishtiaq Hassan
J. Bio. Env. Sci.8( 6), 213-222, June 2016.
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Availability of potable water is the major issue in countries like Pakistan. The problem has aggravated due to more population density and least permeable surfaces. Thirty year rainfall data obtained from Meteorological Department of Islamabad for the study areas of Rawalpindi and Lahore has been used to validate the inbuilt rainfall data of SamSam Rainwater Harvesting Model. The model worked out storage reservoirs for flat roof sizes of 110 m2, 220 m2, 280 m2 and 400 m2 with dwellers of 2, 4 and 8 number. To meet 45% needs of non-potable water demands, in areas with appreciable rainfall, the minimum suggested roof size is 220 m2 for single family (4 persons) and 400 m2 for two family units (8 persons). On the other hand, for areas with lesser rainfall, the minimum suggested size is 280 m2 for single family and 400 m2 for two family units. Implementation of such measures will help saving of 45% (almost half) of potable water.


Abdulla FA, Al-Shareef AW. 2009. Roof rainwater harvesting systems for household water supply in Jordan. Desalination, n. 243, 195-207 p.

Appan A. 1999. A dual-mode system for harnessing roof water for non-potable uses. Urban Water 1, 317-321 p.

Che-Ani AI, Shaari NA, Sairi MFM, Zain MM, Tahir. 2009. Rainwater Harvesting as an alternative water supply in the Future. European Journal of Scientific Research, ISSN 1450-216X, 34, 1. (2009), 132-140 p.

Chiu Y, Liaw C, Chen L. 2009. Optimizing rainwater harvesting systems as an innovative approach to saving energy in hilly communities. Renewable Energy 34, 492-498 p.

Domènech L, Saurí D. 2011. A comparative appraisal of the use of rainwater harvesting in single and multi-family buildings of the Metropolitan Area of Barcelona (Spain): social experience, drinking water savings and economic costs. Journal of Cleaner Production 19, 598-608 p.

Fewkes A. 1999. The use of rainwater for WC flushing: the field testing of a collection system. Building and Environment 34, 765-772.

Fooladman HR, Sepaskhah AR. 2004. Economic analysis for the production of four grape cultivars using micro-catchment water harvesting systems in Iran. Journal of Arid Environments 58, 525-533.

Ghisi E, Tavares DF, Rocha VL. 2009. Rainwater harvesting in petrol stations in Brasília: Potential for potable water savings and investment feasibility analysis. Resources, Conservation and Recycling 54, 79-85.

Goel AK, Kumar R. 2005. Economic analysis of water harvesting in a mountainous watershed in India. Agricultural Water Management 71, 257-266.

Handia  L,  Tembo  JM,  Mwiindwa  C.  2003. Potential of Rainwater harvesting in urban Zambia. Physics and Chemistry of the Earth 28, 893-896.

Jones MP, Hunt WF. 2010. Performance of rainwater harvesting systems in the south eastern United States. Resources, Conservation and Recycling 54, 623-629.

Kahinda JM, Taigbenu AE, Boroto JR. 2007. Domestic Rainwater harvesting to improve water supply in rural South Africa. Physics and Chemistry of the Earth 32, 1050-1057 p.

Li X, Gong J. 2002. Compacted micro-catchments with local earth materials for rainwater harvesting in the semiarid region of China. Journal of Hydrology 257, 134-144.

Li Z, Boyle F, Reynolds A. 2010. Rainwater harvesting and grey water treatment systems for domestic application in Ireland. Desalination 260, 1-8.

Marcelo MC, Enedir G. 2011. Analysis of Potable Water Savings Using Behavioural Models, Water Conservation, Dr. Manoj Jha (Ed.), ISBN: 978-953-307-960-8, InTech, Available from: http://www.intechopen.com/books/waterconservatio n/analysis-of-potable-water-savings-usingbehaviouralmodels.

Marks R, Clark R, Rooke E, Berzins A. 2006. Meadows, South Australia: development through integration of local water resources. Desalination, v. 188, 149-161.

Pandey PK, Panda SN, Panigrahi B. 2006. Sizing on-farm reservoirs for crop-fish integration in rain-fed farming systems in Eastern India. Bio- systems engineering 93, 475-489.

Sazakli E, Alexopoulos A, Leotsinidis M. 2007. Rainwater harvesting, quality assessment and utilization in Kefalonia Island, Greece. Water Research 41, 2039-2047.

Song J, Han M, Kim T. 2009. Rainwater harvesting as a sustainable water supply option in Banda Aceh. Desalination 248, 233-240.

Sturm M, Zimmermann M, Schütz K. Urban W. Hartung H. 2009. Rainwater harvesting as an alternative water resource in rural sites in central northern Namibia. Physics and Chemistry of the Earth 34, 776-785.

The Texas Manual for Rainwater Harvesting. 2005. Texas Water Development Board, third edition, Austin Texas.

Villareal EL, Dixon A. 2005. Analysis of a rainwater collection system for domestic water supply in Ringdansen, Norrköping, Sweden. Building and Environment 40, 1174-1184.

Yuan T, Fengmin L, Puhai L. 2003. Economic analysis of rainwater harvesting and irrigation methods, with an example from China. Agricultural Water Management 60, 21-226.

Zhe L, Fergal B, Anthony R. 2010. Rainwater harvesting and grey water treatment systems for domestic application in Ireland. Desalination, vol 260, issues 1-3, pages 1-8, 30 sep 2010, http://dx.doi.org/101.1016/j.desal.2010.05.035.