The BMC claims it has completed 99 per cent of its pre-monsoon nullah cleaning work on Wednesday, a week prior to the May 31 deadline. Around 9.74 lakh tonnes of silt has been removed from the rivers, nullahs, and gutters. The quantity of silt removed from the 11 km stretch of the Mithi river is equivalent to the amount removed from the entire major nullah network of the western suburbs. 

The Brihanmumbai Municipal Corporation (BMC) carries out  cleaning work before the monsoon, 10 per cent during and 15 per cent after the rainy season.