The board is planning to get a new set of machines - high flow super sucker machines - to clear blockages in sewer lines.

It has expressed interest in buying six such machines at the cost of `10 crore.

"The jetting machines takes a long time to clear blockages and they do not have the capacity to clear major blockages that happen between manholes in the trunk sewers," said P B Ramamurthy, Chairman, BWSSB.

He said the super sucker machines are being used in Delhi, Ahmedabad and Mumbai and have proved to be useful.

The board is also procuring 12 jetting machines to add to its fleet of 76 machines purchased earlier.

BWSSB will have to procure some more machines after the ongoing underground projects in the newlyadded areas of the city are completed.