As California faces a historic drought, more residents are looking to "graywater treatment" as a fairly easy way to cut their water use. The process takes used water from sinks, tubs and laundry washers, mildly treats it within the same building, then reuses the water on a property's landscape.
The process, sometimes dubbed "showers to flowers" or "laundry to landscape," is mostly used in the construction of single-family homes. The process to install a graywater system in existing infrastructure can be complicated and expensive.
"There's a lot of proposals, but nothing comes close to a graywater irrigation system," Steve Bilson, CEO of ReWater Systems, told CNBC. "You've got it all year-round. No one's going to make you stop doing your laundry and it's extremely cost effective."