He was delivering the keynote address at the national conference on urban water management. To check this trend, changing old pipelines which are corroded is a must, he said.

M Kemparamaiah, chief engineer of BWSSB said about 33,000 connections were selected in Vasanthnagar for leakage reduction through rehabilitation of water distribution system.

With minimum night flow test, BWSSB found the leakage level to be 87 litre per connection per hour (l/c/hr) as against a target of 27 l/c/ hr, he said. Kemparamaiah said after attending to the leakages, the quality of water supply improved.