Facing severe droughts, developers seek to reuse the water they have
When Salesforce Tower in San Francisco fully reopens this year after 16 months of pandemic-induced closure, one of its more unusual features will be found in the basement. … Taking up the space of 16 cars, the black-water system, so called because it treats all wastewater, including from toilets and showers, will filter an estimated 30,000 gallons per workday, or 7.8 million a year. [Water recycling efforts are] gaining traction as a severe drought punishes industries in states like California, Montana, New Mexico and Utah.