About Dropstone

DROPSTONE sarl is a Swiss private company established in Geneva in 2013. It provides advisory services to governments, national and local authorities, humanitarian organisations, development agencies, NGOs, foundations and the private sector.

The clients and partners of DROPSTONE are the Geological Survey of Geneva, the Industrial Services of Geneva, the Swiss Agency for Development and Cooperation, the Swiss Humanitarian Aid, the French Agency for Development, the Humanitarian Dialogue Centre, the Carter Centre, the International Committee of the Red-Cross, the Swiss Red Cross, the French Red Cross, the United Nations (MINUSMA, WHO, WFP), the Geneva Water Hub, the City of Geneva, and AFRY.

The company has developed activities in 27 countries since 2013, mostly in Africa, but also in the MENA Region, in Asia, Americas and Europe

founder and owner

Patrick Kilchenmann

Patrick is a geologist and hydrogeologist by education. He has thirty years of professional experience, acquired first in Switzerland as a scientist in applied research, and then internationally, working as a chief of project or a senior manager, with long-term assignments in Burkina Faso, Ivory Coast, Mali, Haiti, Nepal and Sudan. He has extensive field experience in Africa, the Middle East, Far East, South Asia and the Balkans. He was previously employed by the ICRC, SKAT_Consulting, the Swiss Agency for Development and Cooperation, and the NGO Helvetas. His fields of expertise encompass groundwater management, water supply and sanitation, infrastructure rehabilitation, road construction and maintenance, conflict prevention and resolution, negotiation of humanitarian access, security management, governance, institutional strengthening, change management, and information management. 

Geologist and Hydrogeologist

Marie-Caroline Pinget

Marie-Caroline is a geologist (PhD) and hydrogeologist (MSc) with 14 years of experience in water quality, combining field and laboratory work, characterization of pollution and solutions elaboration. She started her career in Chile, working for a private company where she was in charge of studies to assess the environmental impact of extractive industries, and then carried on in Geneva, where she is from, working for the Geological Service of the State, before joining DROPSTONE in June 2019. She is now very much involved on the hydrogeological projects of the company in Switzerland.

Geologist and Hydrogeologist

Mehdy Al-Zoubaidy

Mehdy holds a bachelor degree in geology and a master degree in hydrogeology. He has 12 years of professional experience, first in Switzerland as a geologist and hydrogeologist in charge of engineering and environmental impact studies, then internationally as a consultant for the mining sector, international and non-governmental organizations, and national governments (Swiss Humanitarian Aid, German Cooperation). He has worked on groundwater management issues in Morocco, Lebanon and Madagascar, and humanitarian operations in Bangladesh before joining Dropstone in 2023. Mehdy has extensive experience in implementing integrated water management programs, institutional capacity building, and dialogue with national authorities and stakeholders, as well as strong background in spatial analysis and GIS-based remote sensing methods. His skills help decision-makers to rely on thematic maps to better understand and manage water resources


Hala Moughanie

Hala Moughanie is Dropstone’s partner. She is based in Lebanon and has more than 15 years of experience in public strategy building on local and national levels in addition to public reform and public governance. Her work experience also covers the design and implementation of development projects, project management, networking and communication strategies, coordination and monitoring & evaluation activities. Hala is the managing director of Madina for Service Development, a consultancy firm founded in 2016 with a mission to support public institutions in enhancing service provision. She collaborates with Dropstone since 2018 and has provided her support for several evaluations executed in Lebanon, Mali and Burundi (picture courtesy Karam Ayach).

Database Developer and IT specialist

Kingsley Akoh Akebegho

Kingsley is consultant to Dropstone. He holds a BSc degree in Environmental and Botanical Sciences at the University of Buea, Cameroon. He later acquired deep skills in Database Management Systems, Web Development technologies and Microsoft Solutions Development. He has more than 12 years of professional experience with the Cameroon GCE Board as an IT specialist. He has also worked with Dropstone from 2018 till date on the development of tailor-made databases for monitoring humanitarian aid projects. Kingsley speaks English and French.


Maud Krafft

Maud Krafft is consultant to Dropstone. After an MA in political science, Maud spent 20 years working on behalf of the Swiss government. She focused on refugees, migration, culture and public health matters. She then became the country representative of Swiss NGOs in South East Asia and West Africa. She is senior consultant since 2016 and provides advice to institutions, NGOs and the private sector on program management, evaluation, institution building and strategic policy. She is particularly well-acquainted with West and Central Africa (Mali, Niger, Burkina Faso, Rwanda, Senegal, Central Africa) thanks to her field missions. Maud’s working languages include French, German, English and Italian. She collaborated with Dropstone on projects implemented in Senegal, CAR and Mali.


Shukhrat Igamberdyev

Shukhrat has more than 20 years of professional experience on a multiple of comprehensive projects that contributed and helped the Government of Tajikistan transform its water sector management with application of IWRM principles across Tajikistan’s river basins. He has managed projects that supported water sub-sectors of drinking water supply and sanitation, Irrigation & Drainage, watershed management, disaster risk reduction and mitigation, environmental protection in fragile contexts of climate change, inter-stream water conflicts, and water use inefficiencies and scarcity. Shukhrat’s experience and expertise ranges across various sectors, primarily in livelihoods improvement, WASH strategy and development, Water Sector Reforms, and agriculture. He has acquired solid skills in projects development, implementation, monitoring and data management, as well as programs evaluation. Preparation of policy briefs, case study and feasibility reports had been one of his regular products.


Georges Comninos

Georges is a seasoned humanitarian expert with more than 30 years of professional experience with the ICRC. During his 25 years in the field, he has been directly involved, at various levels – from delegate, team leader, coordinator to head of delegation and finally regional director – in the analysis of the protection needs of affected populations arising from violations of IHL and Human Rights in various complex contexts; then in the design, implementation, coordination and supervision of protection programs and activities, taking into account the realities on the ground, the capacity of local authorities as well as the programs developed by other actors present. Georges participated in the feasibility study mandated by SDC in Mali in 2021 with Dropstone.

Clients & Partners