Mumbai Water Stock Reaches 77.62% After Heavy Rains

Mumbai's water reserves have received a significant boost following continuous monsoon rainfall, with the combined stock in the seven lakes supplying drinking water to the city rising to 77.62% of their total live storage capacity.

According to data released by the Brihanmumbai Municipal Corporation's (BMC) Hydraulic Engineer's Department, the increase comes after heavy rainfall recorded between 6 am on Thursday, July 23, and 6 am on Friday, July 24, 2026. During the 24-hour period, the city's total reservoir stock registered a sharp 7.88 percentage point rise.

The seven reservoirs, Upper Vaitarna, Modak Sagar, Tansa, Middle Vaitarna, Bhatsa, Vihar, and Tulsi, now collectively hold 11,23,443 million litres (ML) of water against their total live storage capacity of 14,47,363 ML. Modak Sagar, Vihar, and Tulsi continue to remain at 100% capacity, while Tansa has reached 98.77%, and Middle Vaitarna has climbed to 75.14%.

Bhatsa, the city's largest reservoir, now stands at 73.51% of its useful storage capacity, while Upper Vaitarna has reached 62.97%. The catchment areas continued to receive substantial rainfall over the past 24 hours, with Upper Vaitarna recording the highest rainfall at 290 mm.

The steady rise in lake levels comes as Mumbai continues to receive widespread monsoon showers, significantly strengthening the city's drinking water reserves. With nearly 78% of the annual water storage now filled, the latest increase offers considerable relief and improves the city's water security for the months ahead.

The Bhandup Complex, which houses Mumbai's Master Control Centre for water supply operations, recorded 86 mm of rainfall during the period, taking the season's cumulative rainfall at the complex to 2,202 mm. Four reservoirs have already started overflowing this monsoon, with Upper Vaitarna beginning to overflow on July 6, followed by Vihar and Tulsi on July 7, Tansa on July 22, and Modak Sagar on July 23.

The increase in water stock is a welcome relief for the city, which has been facing water scarcity issues in recent years. The BMC has been working to improve the city's water supply infrastructure, and the recent rainfall has helped to boost the city's water reserves.

The city's water security is expected to remain stable for the months ahead, thanks to the significant increase in water stock. The BMC will continue to monitor the water levels and take necessary steps to ensure that the city's water supply remains uninterrupted.

In conclusion, the recent rainfall has brought much-needed relief to Mumbai's water reserves, and the city's water security is expected to remain stable for the months ahead. The BMC's efforts to improve the city's water supply infrastructure, combined with the recent rainfall, have helped to boost the city's water reserves and ensure a stable water supply for the city's residents.