We work with passionate people, experts and young talents. We believe that rainwater harvesting has a key role to play in mitigating land degradation, biodiversity loss and the risks associated with extreme weather events. IRHA is an NGO registered by Swiss law, with UN ECOSOC status.




Marc Sylvestre - Executive Director of IRHA

Graduated from a Master in Urban Development (IUG, 2007) and MSc in Water and Environmental Management (WEDC-Loughborough, 2017), Marc has managed numerous development projects in Lebanon, Haiti and Nepal. He participates in the strategic and operational development of the organization (strategy 2018-2020), contributes to the development of projects and seeks funding along with the framing in terms of monitoring-evaluation-impact of the activities implemented.

> LinkedIn


Anne Marie Khetib - Head of Admin and Finance

Administrative and financial director of the World Scout Bureau (WSB) for 9 years, she holds the same responsibilities within our NGO and ensures that our organization, recognized by public utility, implements the required procedures, in terms of good governance and financial management (Swiss GAAP FER 21).

> LinkedIn


Rachel Hosein Nisbet - Director of Communications & Advocacy

Rachel's expertise lies in understanding the complex intersection of cultural practices and environmental processes. Scientific field experience in Svalbard, Britain, Venezuela and the Swiss Alps gives Rachel first-hand knowledge of multiple, terrestrial biomes. Research into river narratives that cultivate readers’ practical wisdom shows her this listening attention is essential to foster socio-ecological wellbeing.

Rachel holds two PhDs, in the geosciences and the environmental humanities, respectively. Her Indo-Trinidadian heritage reinforces her commitment to evolving integrated, socio-ecological practices to improve the capabilities of low-income communities.


Florian Bielser - PM Rainwater Harvesting - Agroforestry

Florian Bielser is a twenty-six-year-old MSc student of environmental engineering at the EPFL, Switzerland. He is currently on placement as an IRHA project manager in Fatick region (Senegal).


Blandine Barthod - PM IWRM/ Watershed management

Graduated from a B.A. in International Relations and a Master in Environmental Sciences, Blandine is interested in addressing water related issues. She is currently monitoring the management of the Blue School programmes as well as launching the “rain communities” project in the area of Pokhara (Nepal).





Han HEIJNEN - President


Jean Bernard Rebord - Treasurer


Clara Ariza - Secretary


Salvano BRICENO - Member


Bob BOULWARE - Member


Margarita Pacheco - Member


2018-2020 IRHA Strategy

The Strategy framework presents our organization's objectives, outcomes. outputs, indicators and draws a roadmap towards 2020. It clarifies how we work to develop, implement, and evaluate the performance of our organization and of our programmes.

The business plan specifies our working model, how we intend to position our organization among others, the added value obtained by collaborating with IRHA and its sustainability.

The financing planning describes the investment needed to realize our strategy.

These documents are available upon request for our donors and partners.

> Contact


Monitoring, Evaluation and Impact

We pay great attention to establishing a quality due diligence of projects with our local partners, to develop solutions based on a detailed understanding of their needs, and to perform a 'hands-on' monitoring of project results. Tracking indicators and achieving project goals allows us to present tangible and measurable results.

The impact of our actions since 2002: + 600'000 children and women benefiting daily from a drinking water resource, + 100 rainwater collection tanks, + 200 school gardens, 54 schools and 9 health centers in 14 countries of intervention.


The 2019 Annual Report (summary) is on the making!

The 2019 Annual Report will present the achievement of IRHA programmes and initiatives towards communities on rainwater harvesting management, climate resilient agriculture, ecosystems management and evidence based advocacy/policy.


An ecosystem of 60+ organizations


Our projects

The Blue Schools

This program aims to educate school children to the management of water, sanitation and good hygiene practices, but also the recovery of waste to make blue schools, incubators of social change "

> Read More

> Discover the initiative "one child, a tree"


Rain, Forest and People

Climate change requires us to rethink our management methods and practices. This project aims to build community resilience by combining better management of water resources, trees and soil.

> Read more


Rain Community

Changes in rainfall patterns in the mid-hillls of Nepal disrupting the subsistence agriculture. The project aims to implement better water resource management at the watershed level to promote water infiltration.

> Read more


Emergency Rain

The "Emergency Rain" project aims to provide access to clean water and restore dignity for those who have nothing, the forgotten from water services, who live on the outskirts of our cities and have to fight every day to access even water for drinking.

> Read more


Workshops: Water and the City

The objective of this workshop is to bring school children to become aware of their environment, and to be able to implement durable, sustainable solutions in their city.

> Read More


Workshop: in the rain ink

The aim of this "In the rain ink" project is to transform the representations of rainwater seen as a nuisance, poetically using the urban environment in which we live.

> Read More

> See Trailer



International Rainwater Harvesting Alliance (IRHA)

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

T: +41 22 797 41 57

Make a donation


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