Accuracy, Science &
Water Resources
A trusted partner to Swiss cantons, utility companies and local authorities. We provide sustainable technical solutions in hydrogeology and geothermal energy.
Agility, WASH &
Fragile Contexts
Emergency and development projects for NGOs, the United Nations and donors. Water management in areas where infrastructure is lacking.
Our core commitment
“We turn complex technical and institutional challenges into evidence-based decisions.”
Dropstone Vision
Two Worlds, One Scientific Rigour
We refuse to separate cutting-edge technical expertise from the harshest realities on the ground. Dropstone builds a unique bridge between these two spheres of activity.
The Synergy of Practices
From Switzerland to the rest of the world
We export ultra-precise measurement methods and the rigour of Swiss hydrogeology directly to crisis zones.
From the International to Switzerland
The agility that is essential in extreme humanitarian situations brings unrivalled efficiency, resilience and crisis management to our Swiss operations.
Guaranteed Independence
The fact that we have no financial interests in the execution of works or the provision of equipment ensures that our analysis remains entirely impartial.
We firmly believe that a political, public or humanitarian decision is only valid if it is based on irrefutable scientific evidence.
Water lies at the heart of all major climate, health, geopolitical and development issues. Whether we are designing a geothermal system for an eco-neighbourhood in Geneva or ensuring the water supply for a displaced population in a conflict zone, we apply the same level of attention to detail.
Our Expertise
Areas of Expertise of a Team of Experts
Switzerland
Hydrogeology & Groundwater
Quantitative and qualitative monitoring of groundwater, studies on the protection of water abstraction points, 3D aquifer modelling and cantonal planning.
Switzerland
Surface Geothermal Energy
Thermal feasibility studies, design of ground-source heat pump fields, and the use of geothermal energy for eco-neighbourhoods and Swiss industries.
International
WASH & Infrastructure
Water engineering, hygiene, sanitation, planning of distribution networks in emergency situations and community development.
International
Water governance
Institutional mediation, fair water pricing, regulatory support for water ministries, and peaceful management of transboundary resources.
Transverse
Monitoring, Evaluation & Learning
Technical and strategic expertise in large-scale projects, performance audits, and the preparation of evidence-based reports for donors.
Transverse
Institutional Capacity Building
Development of bespoke training modules for public and humanitarian organisations, and the design of skills transfer programmes in the field.
Trust Built
They have entrusted us with their strategic decisions
From Switzerland’s leading public sector organisations to the world’s largest international agencies, our expertise has helped to develop
both long-term and emergency solutions.
