Amid drought concerns, S.F. supervisor wants new large buildings to recycle and use less water
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Pipes in the control room of the San Francisco Public Utilities Commission building return treated toilet water to irrigate plants on the exterior and interior of the building. A new ordinance would expand the use of recycled water in some new buildings in the city.Brant Ward/The ChronicleShow MoreShow Less
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Senior stationary engineer Maurice Harper checks a sample of the treated water for purity in the basement control room of the San Francisco Public Utilities building in 2015. The building uses treated sewage water from about 1,000 employees to flush the toilets and irrigate some of the landscaping. A proposed ordinance would require more buildings in the city to do the same.Brant Ward/The ChronicleShow MoreShow Less