Presently RO (Reverse Osmosis) water-purifiers usually have a drainage-pipe that drains out an appreciable quantity of water as waste water before preserving the filtered water in the reservoir. Central government should direct concerned ministry or department whereby water-purifiers may be innovated where there may be no generation of waste water to be drained out before preserving purified water in the reservoir. Any provision of compulsory installation of a separate reservoir to store waster-water to be used otherwise will not work, because people in general will either remove any such reservoir or get it emptied by throwing away the waste water.
Since RO water-purifiers are now-a-days very common in households, hotels, restaurants, eateries and offices, installation of water-purifiers without generating waste water to be drained out will save huge quantity of supplied tap-water from being wasted.
MADHU AGRAWAL