September 15, 2025: Mumbai’s drinking water supply received a major boost as heavy rainfall across catchment areas has pushed reservoir levels close to maximum capacity. Data released by the Brihanmumbai Municipal Corporation (BMC) on Sunday (September 14) shows that the seven lakes supplying water to the city are now 98.70% full.
The combined stock currently stands at 14,28,162 million litres, ensuring that Mumbai’s supply for the year ahead is largely secure. The BMC draws water daily from Upper Vaitarna, Modak Sagar, Tansa, Middle Vaitarna, Bhatsa, Vehar, and Tulsi.
Vehar Lake received the highest rainfall in the past 24 hours, measuring 61 mm, and has reached 100% capacity. Tulsi Lake, also overflowing, recorded 44 mm during the same period, with seasonal rainfall totalling 3,870 mm – the highest among the city’s reservoirs.
Modak Sagar and Tansa recorded 50 mm and 43 mm of rainfall, respectively, with water levels rising by 0.07 metres. Both are now above 98% capacity, having already begun overflowing in July. Upper Vaitarna, a key reservoir, reported 12 mm of rainfall and now stands at 98.73% . Middle Vaitarna, meanwhile, is at 98.52% capacity. Collectively, these four reservoirs hold 6.86 lakh million litres, or 98.84% of their total storage.
Bhatsa Dam, Mumbai’s largest water source, recorded 27 mm of rainfall and is at 98.51% capacity, with controlled water releases under way.
At the Bhandup Complex, which manages the city’s water distribution, 49 mm of rainfall was recorded in the past 24 hours, bringing the season’s total to 2,625 mm. Though slightly below last year’s figure of 2,972 mm, officials confirmed that with reservoirs nearly full, Mumbai’s water supply for the coming year remains secure.
Source: Mid-day
