The catchment areas of the seven lakes that supply drinking water to Mumbai received just 18 mm of rainfall over the past 24 hours, bringing the total water stock to 11.39 per cent or 1,64,832 million litres as of the morning of Friday, June 6.

Mumbai receives its daily water supply from Upper Vaitarna, Modak Sagar, Tansa, Middle Vaitarna, Bhatsa, Vihar, and Tulsi lakes. Combined, these reservoirs have a total capacity of 1,447,363 million litres (ML).

The Brihanmumbai Municipal Corporation (BMC) supplies approximately 3950 ML of water to the city each day. On Thursday morning, the lakes held 11.77 per cent or 1,70,374 million litres. However, after supplying water for a full day, levels dipped. Officials clarified that about 34 per cent of water is lost during transit, and additional quantities are lost to evaporation from the lake surfaces. On June 6, 2024, the lakes held only 6.54 per cent or 94,656 ML. In 2023, they had 11.42 per cent or 1,65,236 ML.