The flow of water tech from San Francisco to Singapore and beyond

Entrepreneur Aaron Tartakovsky is the co-founder of Epic Cleantec. ST PHOTO: NIRMAL GHOSH
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SAN FRANCISCO - In the bowels of a gleaming condo in Mission Street in downtown San Francisco, sandwiched among tech-based giants Twitter and Uber, lies an archetype of the future of big cities in water-scarce California.

Here, in the basement of the 39-storey Fifteen Fifty, is a plant that recycles almost all the water used in the 550-unit mixed-use building.

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