Earlier this year, the Massachusetts Institute of Technology hosted the inauguralMIT Water Innovation Prize, inviting attendees from around the world to pitch their water-conservation device or business to a panel of judges for a chance to win grants totaling $30,000. One of three big winners for the night was a new washing-machine filter that seeks to recycle 95 percent of laundry wastewater.

Source: Making a Washing Machine That Recycles Its Own Water