Siliguri: The Siliguri Municipal Corporation (SMC) will crack down on those who tap water illegally from underground supply lines in many of its wards, in a bid to give uninterrupted water supply to residents. As part of its drive to check the diversion of water, the civic body will conduct raids, slap fine on those found taking water without permission and even seek the help of police to seize their pumps. "In the past couple of weeks, we have received complaints regarding water supply,' said Sharadindu Chakraborty, member, mayor-in-council (water).