06 July,2026 09:38 AM IST | Mumbai | mid-day online correspondent
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Mumbai's water stock has recorded a significant improvement following continuous spells of heavy rainfall across the city and surrounding regions over the past few days. The seven reservoirs that supply drinking water to Mumbai reached 16.92 per cent of their total useful live storage capacity as of 6 am on Monday, July 6, according to data released by the Brihanmumbai Municipal Corporation (BMC).
The combined useful live storage across all seven lakes increased to 2,44,900 million litres against the total capacity of 14,47,363 million litres.
While the recent rainfall has boosted reservoir levels, the current stock remains lower compared to the same period last year. On the corresponding date in 2025, the lakes had recorded 59.56 per cent storage. In comparison, the water level stood at 10.88 per cent during the same period in 2024.
Officials said steady rainfall in the catchment areas has contributed to the rise in water levels, and further improvement is expected if the current rainfall activity continues.
The seven reservoirs that supply water to Mumbai are Bhatsa, Upper Vaitarna, Middle Vaitarna, Tansa, Modak Sagar, Vihar and Tulsi.
Among the reservoirs, Upper Vaitarna recorded a water level of 595.89 metres, with useful live storage reaching 4.99 per cent.
Bhatsa, one of the key sources of Mumbai's drinking water supply, also showed improvement. The reservoir recorded storage of 112.40 million litres, reaching 14.12 per cent of its capacity.
Middle Vaitarna recorded a water level of 248.95 metres, with its useful live storage increasing to 18.35 per cent. Meanwhile, Tansa Lake reached 121.06 metres and held 17.34 per cent of its capacity.
Officials said the improvement across major reservoirs has provided some relief after concerns over lower water availability earlier in the season.
Mumbai had witnessed concerns over its water supply situation in June due to reduced reservoir levels. However, the recent spell of widespread rainfall has helped increase storage across the lakes.
Most lake catchment areas received significant rainfall over the last 24 hours, resulting in improved inflow into the reservoirs.
Authorities said the situation is being closely monitored, and water stock levels are reviewed regularly to assess the city's supply requirements.
Officials expect lake levels to increase further in the coming days if consistent rainfall continues over the catchment areas.
The rise in water storage is considered important as the seven reservoirs serve as Mumbai's primary source of drinking water throughout the year.
Civic authorities will continue to monitor rainfall patterns, reservoir inflow and overall water availability as the monsoon progresses.
