06 June,2026 07:45 AM IST | Mumbai | Eeshanpriya MS
The Tansa lake in the Shahapur taluka of Thane district. It is one of the seven such water bodies that supply water to Mumbai, which have a total capacity of 14,47,363 million litres. File pic
Mumbai now has a little under 50 days of water stock left in the seven lakes that supply water to the city, despite the 10 per cent water cut imposed by the Brihanmumbai Municipal Corporation (BMC) on May 15. As of June 5, the seven lakes have a cumulative water stock of 2,07,089 million litres (ML), and are at 14 per cent of their combined capacity.
This water stock is still higher in comparison to the same day last year, when the lakes were only 11.77 per cent full with 1,70,375 ML of water by June 5, 2025. However, last year, Mumbai had already seen the onset of the southwest monsoon by May 26, 2025.
The Tansa lake in the Shahapur taluka of Thane district. It is one of the seven such water bodies that supply water to Mumbai, which have a total capacity of 14,47,363 million litres. File pic
The BMC had decided to impose the water cut in May due to the India Meteorological Department's (IMD) indication of a below-normal monsoon, with rains up to 90 per cent of the average rainfall across the country, due to the effect of El Nino. With weaker monsoons, the BMC prepared for contingencies to ensure the available water would suffice until August.
Considering the present stock of water in Mumbai's lakes, civic officials said they are now monitoring the situation on a daily basis. A senior official said, "Considering rainfall can be expected within seven to 10 days, we will watch water levels closely. At present, there is no need to panic, but the general advice is that citizens should use water judiciously."
An official said, "We will also monitor rainfall in the lakes' catchment areas carefully to assess the availability of water until next monsoon season."
The lakes that supply water to Mumbai are the Middle and Upper Vaitarna, Bhatsa, Vihar, Tulsi, Tansa, and Modak Sagar. The BMC usually supplies about 3950 to 4100 ML per day. However, with the water cut, this has been reduced to 3650 ML per day.
While Mumbai has recorded two bouts of pre-monsoon showers, only Tansa has received rainfall so far at 13 mm. In comparison, by June 5 last year, the catchment areas of all lakes had received rainfall, with Tulsi receiving 78 mm, followed by Bhatsa 49 mm, and Middle Vaitarna 30 mm.
3950 to 4100 ML
Amount of water supplied daily by BMC
2026 2,07,089 14%
2025 1,70,375 11.77%
