We are a start-up which develops low-tech solar desalination plants for rural areas with saline groundwater. We want to build the desalination plants with the people on-site to give them access to salt-free and unpolluted water and enabling them to produce further plants on their own. Start of our project was in 2013, when Raphael won the TUM DeSal Challenge with his prototypes, a contest for the development of solutions for a sustainable way of desalinating sea water at the TU Munich. Afterwards Raphael started aquaba as a students project at the Deggendorf Institute of Technology. There we developed and tested prototypes until the EXIST Business Start-up Grant enabled us to launch the start-up in 2018.