Liquid Asset Development (LAD) LLC licenses a process to design and fabricate water filters out of concrete. There are two models, one for humanitarian use and one for more robust applications. The goal is to develop filters using globally available materials that require minimal training to design and assemble, and can be produced using existing manufacturing facilities anywhere. This empowers countries to improve water quality without relying on foreign financing or production. Industries that could benefit include desalination, acid mine drainage treatment, agriculture, and humanitarian uses. Advantages are low costs, sustainability, and flexibility.