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  • Writer's pictureSylvain Richer de Forges

Comparative analysis of water harvesting in south east asia

Exciting News from Southeast Asia! 

 Did you know that rain capture technologies are making a splash across the region, revolutionizing water sustainability? 


With an annual rainfall of over 1,500 millimeters (mm), Thailand boasts ample opportunities for rainwater harvesting. According to the Thailand Water Report by Mekong Eye, the country has embraced rain capture methods, contributing significantly to water conservation efforts. Figures show that Thailand currently captures approximately 30% of its annual rainfall for various uses.


Rainwater harvesting is gaining traction in Vietnam, where the annual precipitation ranges from 1,200 to 3,000 mm. The Vietnam Water Supply and Sanitation Sector Report highlights the increasing adoption of rain capture systems, especially in urban areas facing water scarcity. Vietnam has seen a significant increase in rain capture figures, with an estimated 40% of annual rainfall being harvested.


 Despite its varied climate, Myanmar receives abundant rainfall, averaging 2,000 mm annually. The Myanmar Climate Risk Profile by the Asian Development Bank underscores the importance of rainwater harvesting in mitigating water-related challenges in the country. Figures indicate that Myanmar currently captures approximately 25% of its annual rainfall for various purposes.


 With rainfall ranging from 1,400 to 3,000 mm per year, Laos possesses vast potential for rainwater harvesting. The Lao PDR Water Supply and Sanitation Sector Report reveals efforts to promote rain capture technologies as part of sustainable water management strategies. Laos has made significant strides in rain capture, with approximately 35% of its annual rainfall being harvested.


Cambodia experiences an average annual rainfall of 1,300 to 2,700 mm, making rainwater harvesting a viable solution for water security. The Cambodia Water Supply and Sanitation Sector Report highlights initiatives to integrate rain capture systems into rural and urban water management plans. Current figures show that Cambodia captures around 20% of its annual rainfall for various uses.By harnessing the power of rainwater,

 Southeast Asian countries are paving the way towards a more sustainable future. Let's continue to champion innovative solutions for water conservation!

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