"Clean Water and Sanitation" is one of the 17 sustainable development goals set forth by the United Nations. This week, we continue to feature Japanese companies that are contributing to improving sustainability by introducing businesses that have made it their mission to find ways to conserve on water usage. One company has created a recycling system that allows up to 98% of household water to be reusable, and the other has developed an automated cultivation system that uses solar heat to grow crops using limited amounts of water.