our team

David Gallagher, Executive Director


With an MSc (SOAS) in Sustainable Development, David has travelled extensively and has worked in International Development for over 40 years, mainly in the non-government sector - CUSO (Latin America), OXFAM (Africa and the Caribbean) and CARE (Balkans). He now works as an independent consultant on programme development, participatory evaluation and institutional proposal writing.

As former Chair of the Board, David is now Executive Director, responsible for the overall strategy and programming of Aerosan. He is also directly managing the Blue Fuel project in Nepal as well as the Humanitarian Innovation Fund project which is conducting research on the re-design of the Aerosan toilet for easier and safer handling of human waste (by increasing efficiency of desiccation). 

Dianna Marini,  Program Manager


Dianna has a strong interdisciplinary background that integrates environmental management, health & social sciences. After exploring the interaction between environment, society and health, she became especially interested in social & environmental sustainability. She then pursued a Masters in Integrated Water Management at McGill University.


In addition to academic career, she has over five years experience in business involved in development, analytics, project management and strategy in various B2B industries.  She is especially interested in social enterprise solutions, designing innovative business models, and technology transfer. She is also passionate about value-driven approaches to business strategy, health & environmental ethics, corporate responsibility.

As Program Manager for Aerosan, Dianna is responsible for overseeing and planning the implementation of Aerosan's various projects which integrate technological and business solutions to achieve social impact at scale. She also assists in communications and the development of strategic partnerships with the Aerosan Team. 

Prakash Amatya, Country Representative (Nepal) 

Prakash Amatyahas is an advocate for the migrant and underprivileged urban community in Nepal. He is also recognized in the community for his work in capacity building and knowledge transfer. Prakash has a diverse educational background holding a major in Microbiology, Environment and Business Management. He is experienced in promoting rainwater harvesting and freshwater conservation and approaches environmental issues from the perspective of the needs and limitations of businesses, municipalities and non-profit organizations.


Upon contributing to the development of urban water supply and sanitation policies that benefit the impoverished, Prakash worked on promoting awareness and compliance for sanitation policies in urban development. This enabled him to further his professional competence in the field of urban community development in order to improve the livelihood and dignity of waste workers in the Kathmandu Valley. Prakash has also played an instrumental role in establishing the Freshwater Action Network in South Asia (FANSA) and continues to raise to advocate at the regional and international level.


Prakash continues to pursue his expertise in WaSH and urban development to find workable solutions for today’s problems. His professional background, inspiring leadership, optimism and personal humility have earned him a great reputation in the field.