Trade Unions of National Water Supply and Drainage Board (NWSDB) have decided to launch a indefinite strike from today demanding the government to grant them due salary increment .
According to the convener of NWSDB trade union alliance Engineer Upali Rathnayake, every employee of the board is entitled to have a salary increment once in three years.
He said the authorities have failed to give an ear to their demands though they participated in a number of discussions to get the issue settled through negotiations. .
He said they would not refrain from distributing water but stop maintenance activities from today.