NEWater is high-grade reclaimed water made by further purifying treated used water through a rigorous three-stage process. Going through microfiltration, the unwanted substances such as suspended solids, minute particles, disease-causing bacteria and viruses are filtered out by membranes, leaving only dissolved salts and organic molecules.
At the reverse osmosis stage, the water passes through tiny pores in a semi-permeable membrane which only allows very small molecules like water molecules to go through. This ensures that undesirable contaminants such as bacteria, viruses, heavy metals, disinfection by-products, etc, are eradicated. The end result is high-grade water that is free from viruses and bacteria and contains very low levels of salts and organic matters.
As an added safety measure, the high-grade water next undergoes ultraviolet disinfection, guaranteeing the purity of the product water. Some alkaline chemicals are then added to restore the pH balance of the water. The end product water is ultra-clean and safe for drinking.