Bengaluru’s water board has begun asking citizens to install aerators and reduce water use, citing a severe monsoon deficit that has left reservoirs critically low. The Bengaluru Water Supply and Sewerage Board, or BWSSB, issued the advisory after this year’s monsoon brought far less rain than normal, forcing reservoir levels to drop faster than usual. The board is now planning ahead to the summer of 2027, when water shortages are expected to become acute.
An aerator is a small device fitted to taps that mixes air into water flow, reducing the amount of water used without affecting how the tap functions. Installing these devices costs little and can cut household water consumption by 30 to 50 percent. The BWSSB’s push suggests the board expects sustained water stress over the next few years, not just a temporary shortage. Citizens who install aerators and reduce water use during bathing, cooking, and cleaning can lower their individual consumption significantly.
Bengaluru’s water crisis reflects a larger pattern across Indian cities. The city depends on reservoirs fed by seasonal monsoon rains and receives water from sources outside the city, making it vulnerable when rainfall fails. This year’s deficit monsoon, combined with growing demand from a city of over 10 million people, has created an urgent pressure. Summer of 2025 and 2026 will also see water stress, but the board is flagging 2027 as a particular concern based on its projections.
The advisory also comes as groundwater levels in and around Bengaluru continue to fall. Over-extraction for agriculture and drinking water supply has depleted aquifers, and reduced rainfall means less water percolates into the ground to recharge them. This double squeeze, falling groundwater and low reservoir levels, means the city cannot fall back on alternate sources if surface water runs out.
The BWSSB’s message to citizens reflects institutional acceptance that demand management, not infrastructure expansion alone, must become part of Bengaluru’s water strategy. Installing aerators and reducing consumption are individual actions, but they signal a broader need for behavioral change across the city. The board has also begun fixing leaks in its distribution network, as significant water is lost before reaching homes. However, reducing demand is now being treated as equally important. If water levels do not recover sufficiently over the next two monsoons, the board may need to implement stricter rationing or pricing measures.
