How does a city-state of just over six million people now cover roughly 40 percent of its total water demand with what its citizens flushed down the toilet a week earlier?

Singapore's five NEWater plants recycle used water through microfiltration, reverse osmosis, and ultraviolet disinfection to supply up to 40 percent of the city-state's water demand — a model now being copied from Phoenix to Delhi. The post How does a city-state of just over six million people now cover roughly 40 percent of its total water demand with what its citizens flushed down the toilet a…