The International Rainwater Harvesting Alliance (IRHA)

The IRHA promotes rainwater harvesting as an effective and sustainable solution in the face of lack of water, climate extremes (drought, floods) which weaken the ecosystems as well as communities.


Who we are?

The International Rainwater Harvesting Alliance (IRHA) is a Swiss based NGO organization established in Geneva since 2002. IRHA has the mandate to promote rainwater harvesting as an effective and sustainable solution in the face of lack of water, natural disasters such as floods and droughts, which weaken the ecosystems and communities. We work with the authorities of the countries, water services but also watershed committees or communities themselves through the the implementation of water resources projects.IRHA develops initiatives with its partners that structure the organization's strategy.Why are we different? Simply because we develop sustainable responses that respect balances and ecosystems and above all the water cycle. By optimizing available rainwater resources, we respect the local hydrological balance while giving back this resource (after use) to the land and ground water. Since rainwater harvesting systems are gravitational, our carbon footprint is nul.


Conference on Rain Water Harvesting, livelihood and Ecosystems on 28th July 2019 (Nepal) WASH Solutions, in collaboration with different organizations, is organizing a Conference on Rain Water Harvesting on 28th July 2019. Interested people are requested to send their abstract whose paper matches with the theme. Details of this conference, paper themes, deadline of paper submission, etc can be obtained from the brochure.

> More to read > Brochure


Conference on Water Security through Rain water harvesting 27-29 Nov. 2018, Colombo, Sri lanka

Lanka Rain Water harvesting Forum in collaboration with the Sri Lankan Ministry of City Planning and Water Supply and IWMI organize a 3 day conference workshop on Water Security through Rain water harvesting to be held from 27th till 29th Nov. 2018.

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11th Rainwater Harvesting and Management Symposium, 12-14 Nov. 2018 (Brazil)

IRHA will participate in the 11th Rainwater Harvesting and Management Symposium to be held from 12-14 Nov. 2018 (Brazil) organized by ABCMAC. This forum has been held since 1999 and has made it possible to convince the local population of rainwater harvesting and authorities to build more than 1 million reservoirs across the country.

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41st WEDC International Conf., 9-13 July at Egerton University, Kenya

IRHA participated in the 41st WEDC International Conference, co-hosted with Egerton University, on Egerton main campus in Kenya. The conference is a valued and respected platform for reflection, debate and exchange of knowledge and ideas on water and saitation issues that are rooted in practice.

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Blue School and Health centre - Completed

After 6 months of project, We are happy to announce that the Blue School of Trapiche Bajo and 1 Health centre are now completed . More water, better water will make students and staff healthier. This initiative will potentially disseminate in the future as authorities understood the benefits of harvesting rain. Thank you to the support of Foundation Hirzel, Cologny, Collonge Bellerive, Lancy, Plan les Ouates, Puplinge and the industrial services of Terre Sainte and Neighborhoods (SITSE).

> Watch the movie of the project


Healthier students in Bolivia - Blue School Completed

The works started in March 2018 on the Trapiche Bajo school are now completed. The rehabilitation of the school greenhouse, toilets and washrooms will improve significantly the health and studying conditions of the 159 students and teachers. The impact of Blue School has demonstrated to reach out to families in the neighborhood. Authorities have now perceived the benefits of rainwater harvesting and are willing to replicate.

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Latest News

Rainwater at the tap @RTS



International Rainwater Harvesting Alliance (IRHA)

International Environment House 2
Chemin de Balexert, 9
1219 Châtelaine, Geneva CH

T: +41 22 797 41 57

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Account: 17-198970-3
IBAN: CH15 0900 0000 1719 8970 3


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