Gurugram, May 27 -- More than 400 houses in the Housing Board Colony of Sector 31 have been receiving muddy water with a foul odour for past three days, locals said, raising concerns health risks before monsoon. Residents said the issue began after pump operators of the Municipal Corporation of Gurugram (MCG) circulated a notice on May 22 informing people about cleaning of underground water tanks. The Housing Board Colony, spread across nine acres, has 474 houses and around 1,200 residents. "We received a message in our groups saying the water supply would be affected on Saturday due to ongoing underground water tank cleaning work by MCG, so the residents stocked up on water a day before. But on Sunday, after the cleaning, we started getting smelly and muddy water in our pipes. This shouldn't have been the case," said Naveen Mudgal, RWA president. Residents said they immediately complained to the junior engineer, but the issue persists. "Till today, it has been four days; we are still getting dirty water in our houses. We are forced to use the same water for our daily activities. There were so many deaths in Indore due to contaminated water. Do the officials want the same scenario here?" said resident Ramesh Kabbo, who has been living in the colony since 1993. However, junior engineer (MCG) Rakesh Kumar said the underground tanks in the colony had not yet been cleaned. "The process of cleaning the tanks has begun across the ward. The specific tanks in the colony have not been cleaned yet. The message was intended for the whole ward and not a specific colony. The cleaning project will continue for at least five to six weeks, and the water supply will be affected till then," Kumar said. Addressing complaints regarding contaminated supply, Kumar said: "Plumbers were sent to different houses individually to check for the problem. The problem is not in the MCG water supply line. The individual water line of one of the houses in the colony is running close to the sewer pipeline and has a leakage. We are trying to identify the house." Kumar added that the owner of the identified house would have to fix or replace the pipeline to prevent recurrence. Residents also raised concerns over uncleared drains ahead of the monsoon. "Monsoon is close, and none of the drains have been cleaned and desilted," said Mudgal, warning of waterlogging and sewage overflow during rains. Kumar said the estimate for drain cleaning work in ward 13 was sent for approval two weeks ago, and work would begin after the nod....