A Singapur Government has completed its evaluation of the Expert Panel's report and accepted the proposal to use NEWater for indirect potable use in Sep 2002. This means mixing and blending NEWater with raw water in the reservoirs before undergoing conventional treatment at the waterworks for supply to the public for potable use. PUB has introduced 3 mgd of NEWater (about 1% of total daily water consumption) into Singapur´s raw water reservoirs. The amount will be increased progressively to about 2.5% of total daily water consumption by 2011.
I think that in production costs, NEWater is more expensive than desalinated sea water. But they have chosen this way.