It is possible enough to treat
wastewater and also make drinkable pure water by using latest advanced
technology. Actually, in Singapore, there are huge water treatment plants in
which such an advanced technology is used, and they cover 40% of whole
country's water supply. Some advanced membrane technologies developed in Japan
are used. Anyone can observe one of the plants, and I also visited there (NEWater
Visitor Centre) on July 10th.
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