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Ariyabandu, R. De S., 2003. Very-low-cost domestic roof water harvesting in the humid tropics: its role in water policy. DFIDKar Contract R783, Report R4, Prepared By, Lanka Rainwater Harvesting Forum.

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Low Cost Rainwater Harvesting: An Alternate Solution to Salinity Affected Coastal Region of Bangladesh

1Assistant General Manager, Jessore Palli Bidyut Samity-2, Jessore, Bangladesh

2Department of Civil and Environmental Engineering (CEED) North South University, Dhaka, Bangladesh

3Professor, Kristianstad University, Kristianstad, Sweden

4Senior Lecturer, Kristianstad University, Kristianstad, Sweden

American Journal of Water Resources. 2014, Vol. 2 No. 6, 141-148
DOI: 10.12691/ajwr-2-6-2
Copyright © 2014 Science and Education Publishing

Cite this paper:
Kamal Ziaul Islam, Md Sirajul Islam, Jean O. Lacoursière, Lisa Dessborn. Low Cost Rainwater Harvesting: An Alternate Solution to Salinity Affected Coastal Region of Bangladesh. American Journal of Water Resources. 2014; 2(6):141-148. doi: 10.12691/ajwr-2-6-2.

Correspondence to: Kamal  Ziaul Islam, Assistant General Manager, Jessore Palli Bidyut Samity-2, Jessore, Bangladesh. Email:


This study investigated the prospect of rainwater harvesting as a low cost alternative potable water supply option along the coastal region of Bangladesh, which is considered as one of the most vulnerable countries in the world due to climate change and resulting sea level rise. Because of increasing salinity intrusion, potable water scarcity become severe at the south-western coastal region of the country. The study area for this investigation was Patkelghata in Satkhira district of Bangladesh located in the same zone. The Satkhira district averages nearly 1,710 mm rainfall per year. Based on rural housing pattern of the region, a rainwater harvesting system is proposed, which consists of roof catchment, gutters, down pipes, first flush devices, filter chamber and storage tank. The minimum catchment area was assumed to be 6 m2 and storage tank of 2000 liter capacity. Data was collected on the present state of freshwater supply, sources and quality, average rainfall in the region, dry spell period, family size, water use nature, rain water quality and material to be used for storage, etc. Rainwater quality was also tested and the parameters were found to be within Bangladesh’s standard limit. After a detail calculation, an approximate cost was assumed to be $171 for building and operation of the whole system. A questionnaire survey was also conducted on views and opinion of local people to understand the problems, prospects and the popularity of rainwater harvesting in Bangladesh.