Mumbai’s 7 Lakes At 98.70% Capacity, BMC Confident Of Adequate Water Stock Until June 2026
2025 年 10 月 1 日
Mumbai’s Water Reserves Near Full Capacity Ahead of October
Mumbai: Mumbai requires at least 14.47 lakh million litres (ML) of water stock by October 1 to ensure an uninterrupted supply for the entire year. As of Wednesday, the seven lakes supplying water to the city have reached approximately 98.70% of their total capacity — around 14.28 lakh ML.
With rainfall expected to continue for another week, civic officials are confident that the water stock will surpass the required level, ensuring sufficient reserves to last until the next monsoon season.
Daily Water Supply from Seven Lakes
The Brihanmumbai Municipal Corporation (BMC) supplies 4,000 ML of water daily to Mumbai from seven lakes — two located within the city (Tulsi and Vihar) and the others situated in Palghar, Thane, and Nashik.
These lakes have a total storage capacity of 14.47 lakh ML. Typically, lake levels peak between 97% and 99% during September to October, as they continue to fill from the monsoon rains starting in June. On this day last year, storage stood at 99.37%, slightly higher than this year’s 99.18%.
“Since water is supplied daily, stocks never reach 100% — it’s live storage,” explained a senior civic official, adding that the current reserves are sufficient to meet Mumbai’s water requirements until next June.
Current Lake Storage Levels
- Upper Vaitarna: 2.26 lakh ML (99.58%)
- Modak Sagar: 1.28 lakh ML (100%)
- Tansa: 1.43 lakh ML (98.77%)
- Middle Vaitarna: 1.92 lakh ML (99.64%)
- Bhatsa: 7.01 lakh ML (97.86%)
- Vihar: 27,698 ML (100%)
- Tulsi: 8,046 ML (100%)
With most lakes at or near full capacity, recent rainwater is simply flowing away unused.
BMC’s Overflow Management Project
To address this, the BMC has initiated a project to capture 200 million litres per day (MLD) of surplus water from Vihar Lake through the construction of a new pumping station. This facility will store and reuse excess water, while also helping mitigate monsoon flooding in low-lying areas such as Santacruz, Kalina, Kurla, and Ghatkopar.
At present, overflow from Vihar Lake drains into the Mithi River, contributing to flooding in these suburban pockets. The new project aims to reduce such impact by better managing surplus water.
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