The BWSSB has decided to supply treated water in all areas at 50 per cent of the cost of drinking water that is being supplied now. Treated water supply will begin within six months, Bangalore Water Supply Minister Katta Subramanya Naidu told reporters on Friday. Want to save on the monthly water bill? Then use treated water for all your non-potable purposes from the BWSSB. The BWSSB has decided to supply treated water in all areas at 50 per cent of the cost of drinking water that is being supplied now. Treated water supply will begin within six months, Bangalore Water Supply Minister Katta Subramanya Naidu told reporters on Friday. The BWSSB will set up 20 sewerage treatment plants across Bangalore. Used water will be treated in these plants, and will be transferred to storage points to be set up at all 198 wards of BBMP. The plan is to supply 700 million litres of treated water every day, he added. Bangalore is presently getting 850 million litre of water every day from the river Cauvery. But the demand for water is around 1,200 MLD. Additional 500 MLD water will come only after the completion of the Cauvery IV Stage, Phase I project, which has commenced only recently.