After graduating from university, David founded Wateroam, where they develop and design their own unique water filtration system that caters specifically to disaster-hit and rural communities, providing them with access to these simple-to-use systems and quick-to-deploy systems that can be used by lay people without technical know-how. Moved by the sight of children drinking from contaminated water sources during his many mission trips and overseas community projects, he answered God’s call to combine his livelihood skills and missions to serve.