In a move to ensure that the RWH rules are strictly adhered to, the notice states that the water connections to the buildings would be cut off if the RWH systems are not installed by May 27.

Even after more than five months of making an amendment to the BWSSB Act, making RWH compulsory, nearly 80 per cent of the house owners have not installed the RWH systems in their buildings.

According to the specifications mentioned in the Act, RWH systems are a must for at least 50,659 buildings that have been built in an area of 2,400 square feet or more.

However, only 8,253 building owners have so far chosen to instal RWH systems in their buildings.

The RWH system should be installed in new buildings that are being built or would be constructed in an area of 1,200 square feet or more.

According to data collected by the BWSSB through its meter readers, of the 14,100 buildings in the south zone, RWH systems are installed in only 2,469; of the 10,386 buildings in the south east zone, RWH systems are installed in 978 buildings and of the 12,753 buildings in the north zone, only 2,100 have RWH systems in them. Also, only 618 out of the 4,630 buildings have RWH systems in the east zone and 2,048 out of the 5,500 buildings in the west zone have RWH systems.

Only 40 building owners have chosen to install RWH systems in the central zone.

A BWSSB official said, “The meter readers update the list as and when the building owners instal the RWH systems. We will be forced to cut off the water connections to those building that have not installed the RWH systems as there are no chances of the government relaxing the deadline.

People should instal the RWH systems at the earliest and help us avert the impending drinking water crisis.”