Water Levels in Thane and Nashik Lakes Drop to 8.3 Percent

Water levels in the seven lakes supplying water to Mumbai, five of which are located in the neighbouring Thane and Nashik districts, have plunged to a critical 8.3% of their useful capacity as of June 22, 2026. According to data released by the Brihanmumbai Municipal Corporation’s (BMC) Hydraulic Engineer’s Department, a delayed monsoon in Maharashtra has left the region with just over 30 days of water supply remaining in its reservoirs.

With a combined useful capacity of 14,47,363 million litres across the seven lakes, the total storage stood at 1,20,712 million litres as of 6 a.m. on Monday, June 22, 2026. Five of these key water sources are situated in Thane and Nashik districts, while the two smallest reservoirs, Tulsi and Vihar, are located within Mumbai.

Water levels in the larger reservoirs have reached critically low levels. Bhatsa, which is the largest reservoir with a total capacity of 7,17,037 million litres, held just 54,918 million litres of useful stock, representing 7.66% of its capacity. Other major reservoirs, including Tansa and the two systems in Vaitarna, are also experiencing critically low levels.

The decline in water levels has been a direct result of the delayed monsoons in Maharashtra combined with the high daily water demand of the city. The BMC has been supplying a daily limit of approximately 3,950 million litres of water. Due to the delayed monsoon and declining reservoir levels, the civic body implemented a precautionary 10% water cut on May 15, 2026, which remains in effect.

The current water storage is significantly lower than the levels recorded during the same period last year. On June 21, 2025, the combined useful water levels of the seven reservoirs stood at 25.87%, representing a much healthier reserve compared to the current crisis.