The Californian craft beer brewed from waste water

A San Francisco brewery is using Nasa technology to make beer with water from sinks and showers, while other brewers are finding new ways to go green

In autumn of 2014 - three years into California's devastating drought- architect Russ Drinker became fixated on brewing beer from recycled greywater (that is, water that's been treated after use in sinks, showers and washing clothes).

He was increasingly frustrated that the media paid little attention to water recycling. "They were focused on conservation instead. But if Californians really want to have an impact on our water use, we have to recycle our freshwater ... and get over our psychological resistance to that."